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44 results on '"Optomechanical design"'

1. Optomechanical design analysis and development of space-based visible coded spectrometer based on curved prism dispersion.

Author

Jia, Xinyin, Wang, Feicheng, Liu, Jia, Zhang, Zhanghui, Li, Siyuan, Yang, Ying, Hu, Bingliang, He, Xianqiang, and Liu, Yupeng

Abstract

The coded spectrometer, a relatively new instrument, has the advantage of high signal-to-noise ratio, giving it great application potential. We report the optical design of a space-based visible coded spectrometer based on curved prism dispersion (SVCS-CPD) and further explore the design and analysis of its support structure. A static simulation and modal analysis, sinusoidal vibration mechanical analysis, and random vibration mechanical analysis were performed to demonstrate the excellent mechanical and thermal stability of the support structure. To realize rapid assembly and integration of the off-axis optical system, a point source microscope and three-coordinate measuring machines were employed. In addition, tests of optical design parameters and outdoor push-scan imaging were conducted to validate the high imaging performance of the SVCS-CPD. The results showed that the modulation transfer functions of the SVCS-CPD in the central and marginal fields of view were 0.61 at 31.25 line pairs/mm and 0.53 at 31.25 line pairs/mm, respectively. In addition, the spectral smile and spectral keystone were < 0.3 pixels. The development of the SVCS-CPD can provide a useful reference for similar spaceborne dispersion spectrometers. [ABSTRACT FROM AUTHOR]

Published
2024
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2. High-Stability Cryogenic System for Quantum Computing With Compact Packaged Ion Traps

Author

Robert Fulton Spivey, Ismail Volkan Inlek, Zhubing Jia, Stephen Crain, Ke Sun, Junki Kim, Geert Vrijsen, Chao Fang, Colin Fitzgerald, Steffen Kross, Tom Noel, and Jungsang Kim

Subjects
Optomechanical design, quantum computing, trapped ions, Atomic physics. Constitution and properties of matter, QC170-197, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Cryogenic environments benefit ion trapping experiments by offering lower motional heating rates, collision energies, and an ultrahigh vacuum (UHV) environment for maintaining long ion chains for extended periods of time. Mechanical vibrations caused by compressors in closed-cycle cryostats can introduce relative motion between the ion and the wavefronts of lasers used to manipulate the ions. Here, we present a novel ion trapping system where a commercial low-vibration closed-cycle cryostat is used in a custom monolithic enclosure. We measure mechanical vibrations of the sample stage using an optical interferometer, and observe a root-mean-square relative displacement of 2.4 nm and a peak-to-peak displacement of 17 nm between free-space beams and the trapping location. We packaged a surface ion trap in a cryopackage assembly that enables easy handling while creating a UHV environment for the ions. The trap cryopackage contains activated carbon getter material for enhanced sorption pumping near the trapping location, and source material for ablation loading. Using $^{171}$Yb$^{+}$ as our ion, we estimate the operating pressure of the trap as a function of package temperature using phase transitions of zig-zag ion chains as a probe. We measured the radial mode heating rate of a single ion to be 13 quanta/s on average. The Ramsey coherence measurements yield 330-ms coherence time for counter-propagating Raman carrier transitions using a 355-nm mode-locked pulse laser, demonstrating the high optical stability.

Published
2022
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3. Optomechanical Analysis and Design of Polygon Mirror-Based Laser Scanners.

Author

Duma, Virgil-Florin and Duma, Maria-Alexandra

Subjects
OPTICAL scanners, POLYGONS, FINITE element method, LASER beams, CHARACTERISTIC functions, SCANNING systems
Abstract

Featured Application: Applications of polygon mirror-based scanning heads include laser scanning, 2D and 3D printing, laser manufacturing, imaging, optical metrology, and Remote Sensing. Polygon Mirror (PM)-based scanning heads are one of the fastest and most versatile optomechanical laser scanners. The aim of this work is to develop a multi-parameter opto-mechanical analysis of PMs, from which to extract rules-of-thumbs for the design of such systems. The characteristic functions and parameters of PMs scanning heads are deduced and studied, considering their constructive and functional parameters. Optical aspects related to the kinematics of emergent laser beams (and of corresponding laser spots on a scanned plane or objective lens) are investigated. The PM analysis (which implies a larger number of parameters) is confronted with the corresponding, but less complex aspects of Galvanometer Scanners (GSs). The issue of the non-linearity of the scanning functions of both PMs and GSs (and, consequently, of their variable scanning velocities) is approached, as well as characteristic angles, the angular and linear Field-of-View (FOV), and the duty cycle. A device with two supplemental mirrors is proposed and designed to increase the distance between the GS or PM and the scanned plane or lens to linearize the scanning function (and thus to achieve an approximately constant scanning velocity). These optical aspects are completed with Finite Element Analyses (FEA) of fast rotational PMs, to assess their structural integrity issues. The study is concluded with an optomechanical design scheme of PM-based scanning heads, which unites optical and mechanical aspects—to allow for a more comprehensive approach of possible issues of such scanners. Such a scheme can be applied to other types of optomechanical scanners, with mirrors or refractive elements, as well. [ABSTRACT FROM AUTHOR]

Published
2022
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4. Research on flexure mounts for large aperture transport mirrors of future ICF facility.

Author

Wang, Baoxu, Ji, Fang, Cao, Tingfen, Chen, Xiaojuan, Zhu, Mingzhi, and Wu, Wenkai

Subjects
*INERTIAL confinement fusion, *LASER fusion, *FLEXURE, *ELASTIC plates & shells, *MIRRORS, *OPTICAL aberrations
Abstract

Surface aberrations of transport mirrors within Inertial Confinement Fusion laser facility have significant impacts on system's optical and physical performances. Mounting design of transport mirrors is challenging for the critical specifications of mirror surface aberration under extreme operation environment. This paper presents a novel and general flexure mounting method and structure for transport mirrors with various-axis towards gravity to minimize the mirror surface aberration. Key techniques involved in mirror mounting design, including theoretical modeling, numerical optimization, optomechanical structure design and analysis, and optical testing are explored. The relationship between mirror surface aberration and its use angle θ subject to gravity is clarified using thin elastic plate theory. The mounting configuration is parametrically optimized with a more comprehensive mathematical model. Optomechanical structure design and analysis of the flexure mirror mount are detailed and accomplished. The performance of the proposed mount is experimentally validated by interferometric measurements. Experimental results indicate that the designed mirror mount potentially provides the transport mirrors (with 45° ≤ θ ≤ 90° and no screw pretension) a peak-to-valley aberration level about λ/3 (λ = 632.8 nm) of the total aberration and ∼λ/4 of the residual aberration, respectively. The proposed mounting method and structure provide a feasible and promising method and technique scheme to minimize the transport mirror surface aberrations for the next generation Inertial Confinement Fusion laser facility. The paper work also represents a design effort and a beneficial attempt for analyzing and minimizing gravity aberration for large-aperture, various-axis, and rectangular flat mirrors. [Display omitted] • Effects of gravity on surface aberrations of various-axis transport mirrors are analyzed. • A novel and general mounting method for various-axis transport mirrors is proposed. • A comprehensive optimization for the mounting configuration is mathematically established and accomplished. • An adjustable transport mirror mount, using a novel flexure beam, is designed and numerically analyzed. • Numerical and experimental results show that the proposed mounting method and structure is feasible. [ABSTRACT FROM AUTHOR]

Published
2022
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5. Optomechanical optimal design configuration and analysis of glue pad bonds in lens mounting for space application.

Author

Maamar, F. and Boudjemai, A.

Subjects
*GLUE, *SPACE flight, *OPTICAL engineering, *PHASE space, *SPACE environment
Abstract

• Lens mounting with six contacts glue pad produce the optimum configuration in opto-mechanical assembly. • Non-linear properties of glue pad affect the Von-Mises stresses distributions. • High number of glue contact caused a bigger problem of lens distortion. Optomechanical systems are very complex requiring a high degree of accuracy. The carrier structure of an optical system is required to maintain the position of the optical components with respect to each other within the design tolerances. The most common loads on optical systems are self-weight, due to gravity orientations, and temperature ranges, due to exposure to rapidly changing temperatures from very cold to very hot and during launch. The fixing should ensure mechanical stability and thus accurate positioning in various gravity orientations. In order to ensure reliability during a space flight mission, the optomechanical engineer must understand the requirements of the space flight environment as well as the physics of failure of the optical components themselves; this can minimize the risks of on-orbit failure. This paper focuses on the optomechanical optimal design lens mounting using glue pads bonding. The main idea of this research study is to obtain an optimal choice of the position of the glue to fix the lenses on the barrel in such a way that we obtain a configuration of the optical assembly performance with less stress. In this paper, an investigation was performed using several methods including (thermo-elastic analysis, the margin of safety and lens distortion analysis). The results show that the position with six contacts glue pads is the best configuration compared to other configurations. This solution can be very helpful for decision-makers and optical engineers during the development phases of space optomechanical systems. [ABSTRACT FROM AUTHOR]

Published
2020
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6. OPTO-MECHANICAL SYSTEM FOR LASER BEAM DISTRIBUTION.

Author

MACUCHOVA, KAROLINA, HERMANEK, JAN, and REHAKOVA, MARTINA

Subjects
LASER beams, DIODE-pumped solid state lasers, SOLID-state lasers, ELECTRONIC equipment, HIGH performance computing
Abstract

Laser beam distribution requires complex opto-mechanical system allowing safe and precise delivery of different laser beams from hall laboratories to experimental workstations developed within the HiLASE project of the IOP in the Czech Republic. The unique nature of new generation of HiLASE high energy diode-pumped solid state laser systems with high repetition rates requires advanced design approach. We use modular approach that allows gradual modification and flexible change of the distribution layout according to current laboratory needs as well as customization of individual branches including their optical, mechanical and electronic equipment. The distribution system performance excels with high pointing stability and low vibration transmission. [ABSTRACT FROM AUTHOR]

Published
2019
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7. Strength reliability of rotating mirrors for ultra-high-speed cameras.

Author

Li, Chunbo, Liu, Minqiu, Ruan, Shuangchen, Chen, Shoujun, Ren, Xikui, Du, Chenlin, and Huang, Hongbin

Subjects
*ROTATING mirrors, *RELIABILITY in engineering, *ALUMINUM alloys, *STRAINS & stresses (Mechanics), *RANK correlation (Statistics), *MONTE Carlo method, *MATHEMATICAL models
Abstract

Abstract This study aims to identify numerical analysis methods for the reliability prediction of rotating mirror(RM) strength at the early-stage design. A mathematical model for the strength reliability analysis of RM is established based on the Monte Carlo method, small-sample theory, and reliability principle. Numerical analysis on the strength reliability of RM is conducted, and the results are experimentally verified according to small-sample theory. The spearman rank order correlation coefficients between structure parameters and the maximum stress is the circumradius of mirror body, and that of the material variable is the elastic modulus of high-strength aluminum alloy(Al). The skewness and kurtosis values of maximum stress and strain are all positive. Calculated statistical results obey normal distribution and are right skewed. At 95% confidence level, the strength reliability of the RM with a design speed of 70,000 rpm is 0.999. This finding shows that the strength reliability of the RM meets the required design in ideal state. No failure of RMs occurs among strength reliability experiment, proving the validity of the numerical model. This model provides an economic, feasible, and effective method for estimating the strength reliability of RM. [ABSTRACT FROM AUTHOR]

Published
2018
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8. High-Stability Cryogenic System for Quantum Computing With Compact Packaged Ion Traps

Author

Tom Noel, Ke Sun, Stephen Crain, Chao Fang, Geert Vrijsen, Jungsang Kim, Colin Fitzgerald, Junki Kim, Steffen Kross, I. V. Inlek, Robert Spivey, and Zhubing Jia

Subjects
Cryostat, Coherence time, Materials science, Trapping, Laser, trapped ions, 7. Clean energy, Ion trapping, quantum computing, law.invention, Ion, law, Getter, Optomechanical design, TA401-492, Ion trap, Atomic physics. Constitution and properties of matter, Atomic physics, Materials of engineering and construction. Mechanics of materials, QC170-197
Abstract

Cryogenic environments benefit ion trapping experiments by offering lower motional heating rates, collision energies, and an ultrahigh vacuum (UHV) environment for maintaining long ion chains for extended periods of time. Mechanical vibrations caused by compressors in closed-cycle cryostats can introduce relative motion between the ion and the wavefronts of lasers used to manipulate the ions. Here, we present a novel ion trapping system where a commercial low-vibration closed-cycle cryostat is used in a custom monolithic enclosure. We measure mechanical vibrations of the sample stage using an optical interferometer, and observe a root-mean-square relative displacement of 2.4 nm and a peak-to-peak displacement of 17 nm between free-space beams and the trapping location. We packaged a surface ion trap in a cryopackage assembly that enables easy handling while creating a UHV environment for the ions. The trap cryopackage contains activated carbon getter material for enhanced sorption pumping near the trapping location, and source material for ablation loading. Using $^{171}$Yb$^{+}$ as our ion, we estimate the operating pressure of the trap as a function of package temperature using phase transitions of zig-zag ion chains as a probe. We measured the radial mode heating rate of a single ion to be 13 quanta/s on average. The Ramsey coherence measurements yield 330-ms coherence time for counter-propagating Raman carrier transitions using a 355-nm mode-locked pulse laser, demonstrating the high optical stability.

Published
2022

9. Eye-Safe Lidar System for Pesticide Spray Drift Measurement

Author

Eduard Gregorio, Francesc Rocadenbosch, Ricardo Sanz, and Joan R. Rosell-Polo

Subjects
lidar, spray drift, optomechanical design, signal-to-noise ratio, eye safety, pesticide, laser, remote sensing, agriculture, Chemical technology, TP1-1185
Abstract

Spray drift is one of the main sources of pesticide contamination. For this reason, an accurate understanding of this phenomenon is necessary in order to limit its effects. Nowadays, spray drift is usually studied by using in situ collectors which only allow time-integrated sampling of specific points of the pesticide clouds. Previous research has demonstrated that the light detection and ranging (lidar) technique can be an alternative for spray drift monitoring. This technique enables remote measurement of pesticide clouds with high temporal and distance resolution. Despite these advantages, the fact that no lidar instrument suitable for such an application is presently available has appreciably limited its practical use. This work presents the first eye-safe lidar system specifically designed for the monitoring of pesticide clouds. Parameter design of this system is carried out via signal-to-noise ratio simulations. The instrument is based on a 3-mJ pulse-energy erbium-doped glass laser, an 80-mm diameter telescope, an APD optoelectronic receiver and optomechanically adjustable components. In first test measurements, the lidar system has been able to measure a topographic target located over 2 km away. The instrument has also been used in spray drift studies, demonstrating its capability to monitor the temporal and distance evolution of several pesticide clouds emitted by air-assisted sprayers at distances between 50 and 100 m.

Published
2015
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10. Modal analysis of rotating mirror for ultra-high-speed cameras.

Author

Li, Chunbo, Zheng, Zhijian, Liu, Minqiu, Ren, Xikui, Du, Chenlin, Huang, Hongbin, and Ruan, Shuangchen

Subjects
*ROTATING mirrors, *CAMERAS
Abstract

We theoretically and numerically investigated the modal properties of three different kinds of cross-section rotating mirrors. At the same facet size, the fundamental frequency of equilateral-triangle cross-section rotating mirror (ET-RM) was 8725.4 Hz, which was 1.81 times and 4.60 times higher than that of equilateral-square and equilateral-hexagonal rotating mirrors. The displacement response curves of the three kinds rotating mirrors show that the amplitude of the first peak is further larger than the second one. The first bending modal of rotating mirror is the main reason of the damage for rotating mirrors. The maximum working speed of ET-RM with face size of 17.32 mm × 36 mm is 44,400 rpm. That of the other two kinds of rotating mirror are 37,800 rpm and 27,000 rpm respectively. The equilateral-triangle cross-section as an ideal structure of rotating mirror for ultra-high-speed cameras based on the dynamic properties. [ABSTRACT FROM AUTHOR]

Published
2018
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11. A high strength magnesium alloy-based rotating mirror for an ultra-high speed camera.

Author

Li, Chunbo, Huang, Hongbin, Zhao, Junqing, and Ruan, Shuangchen

Subjects
*MAGNESIUM alloys, *STRENGTH of materials, *HIGH speed optics, *OPTICAL properties of metals, *MECHANICAL properties of metals
Abstract

We theoretically and numerically studied the properties of a high-strength magnesium alloy rotating mirror (Mg-RM) as a novel potential candidate for an ultra-high speed camera. The maximum lateral deformation of the Mg-RM was reduced to 0.92 times that of a high-strength aluminium alloy rotating mirror (Al-RM) at a rotating speed of 5 × 10 5 revolutions per minute (rpm). Meanwhile, compared to the Al-RM, the limit edge linear velocity of the Mg-RM was improved by 1.11 times, indicating that the limit time resolution could be improved by 11% when used for an ultra-high speed camera. According to our theoretical and numerical investigations, the remarkable properties of the Mg-RM, indicate that the high-strength magnesium alloy is another ideal and novel RM material for ultra-high speed cameras. [ABSTRACT FROM AUTHOR]

Published
2018
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12. Second harmonic generation efficiency affected by radiation force of a high-energy laser beam through stress within a mounted potassium dihydrogen phosphate crystal.

Author

Ruifeng Su, Mingzhi Zhu, Zhan Huang, Baoxu Wang, and Wenkai Wu

Subjects
*HARMONIC generation, *LASER beams, *POTASSIUM dihydrogen phosphate
Abstract

Influence of radiation force of a high-energy laser beam on the second harmonic generation (SHG) efficiency through stress within a mounted potassium dihydrogen phosphate (KDP) crystal is studied, as well as an active method of improving the SHG efficiency by controlling the stress is proposed. At first, the model for studying the influence of the radiation force on the SHG efficiency is established, where the radiation force is theoretically analyzed, the stress caused by the radiation force is theoretically analyzed and numerically calculated using the finite-element method, and the influence of the stress on the SHG efficiency is theoretically analyzed. Then, a method of improving the SHG efficiency by controlling the stress through adjusting the structural parameters of the mounting set of the KDP crystal is examined. It demonstrates that the radiation force causes stress within the KDP crystal and further militates against the SHG efficiency; however, the SHG efficiency could be improved by controlling the stress through adjusting the structural parameters of the mounting set of the KDP crystal. [ABSTRACT FROM AUTHOR]

Published
2018
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13. Optomechanical design and analysis of a self-adaptive mounting method for optimizing phase matching of large potassium dihydrogen phosphate converter.

Author

Zheng Zhang, Menjiya Tian, Xusong Quan, Guoqing Pei, Hui Wang, Tianye Liu, Kai Long, Zhao Xiong, and Yiming Rong

Subjects
*SOLID-state lasers, *POTASSIUM dihydrogen phosphate, *SECOND harmonic generation, *COMPUTER simulation, *HARMONIC generation
Abstract

Surface control and phase matching of large laser conversion optics are urgent requirements and huge challenges in high-power solid-state laser facilities. A self-adaptive, nanocompensating mounting configuration of a large aperture potassium dihydrogen phosphate (KDP) frequency doubler is proposed based on a lever-type surface correction mechanism. A mechanical, numerical, and optical model is developed and employed to evaluate comprehensive performance of this mounting method. The results validate the method’s advantages of surface adjustment and phase matching improvement. In addition, the optimal value of the modulation force is figured out through a series of simulations and calculations. [ABSTRACT FROM AUTHOR]

Published
2017
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14. Focus and perspective adaptive digital surgical microscope: optomechanical design and experimental implementation.

Author

Claus, Daniel, Reichert, Carsten, and Herkommer, Alois

Subjects
*MEDICAL microscopy, *ADAPTIVE optics, *SURGICAL technology, *SURGEONS, *OPERATIVE surgery
Abstract

This paper relates to the improvement of conventional surgical stereo microscopy via the application of digital recording devices and adaptive optics. The research is aimed at improving the working conditions of the surgeon during the operation, such that free head movement is possible. The depth clues known from conventional stereo microscopy in interaction with the human eye's functionality, such as convergence, disparity, angular elevation, parallax, and accommodation, are implemented in a digital recording system via adaptive optomechanical components. Two laterally moving pupil apertures have been used mimicking the digital implementation of the eye's vergence and head motion. The natural eye's accommodation is mimicked via the application of a tunable lens. Additionally, another system has been built, which enables tracking the surgeon's eye pupil through a digital displaying stereoscopic microscope to supply the necessary information for steering the recording system. The optomechanical design and experimental results for both systems, digital recording stereoscopic microscope and pupil tracking system, are shown. [ABSTRACT FROM AUTHOR]

Published
2017
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15. Cryogenic application of an autocentering mount working at the diffraction limit.

Author

Sánchez, Beatriz, Keiman, Carolina, Fuentes-Fernández, Jorge, Cuevas, Salvador, Espejo, Carlos, Chapa, Oscar, Flores-Meza, Rubén, Carlos Álvarez, Luis, Lara, Gerardo, and Garcés, Leonardo

Subjects
*CRYOGENICS, *DIFFRACTION gratings, *COLLIMATORS
Abstract

We present the design concept and validation of a cryogenic lens mount for a noncemented doublet for the near-infrared diffraction limited instrument FRIDA. The design uses an autocentering mount that maintains the relative alignment of the lenses, acting against any displacement that may be induced by external forces by automatically returning the lenses to their nominal positions. Autocentering techniques have been used for instruments at room temperature with relatively relaxed image quality requirements. We present in detail its application to a mount for a cryogenic instrument working at the diffraction limit. The design has been tested on the collimator of FRIDA, a noncemented doublet of CaF2 and S-FTM16. We describe the alignment requirements of the system, and we show the calculations that ensure that the lenses will suffer both appropriate stresses and temperature differences. We present the experimental validation of a prototype, demonstrating that the design delivers an excellent performance without inducing unnecessary stresses on the optical components, provided that the lenses are previously aligned with very high precision [ABSTRACT FROM AUTHOR]

Published
2017
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16. Mass reduction patterning of silicon-on-oxide-based micromirrors.

Author

Hall, Harris J., Green, Andrew, Dooley, Sarah, Schmidt, Jason D., Starman, LaVern A., Langley, Derrick, and Coutu Jr., Ronald A.

Subjects
*SILICON compounds, *MICROMIRRORS, *OPTICAL projectors, *NONMETALS, *SILICON oxide
Abstract

It has long been recognized in the design of micromirror-based optical systems that balancing static flatness of the mirror surface through structural design with the system's mechanical dynamic response is challenging. Although a variety of mass reduction approaches have been presented in the literature to address this performance trade, there has been little quantifiable comparison reported. In this work, different mass reduction approaches, some unique to the work, are quantifiably compared with solid plate thinning in both curvature and mass using commercial finite element simulation of a specific square silicon-on-insulator-based micromirror geometry. Other important considerations for micromirror surfaces, including surface profile and smoothness, are also discussed. Fabrication of one of these geometries, a two-dimensional tessellated square pattern, was performed in the presence of a 400-µm-tall central post structure using a simple single mask process. Limited experimental curvature measurements of fabricated samples are shown to correspond well with properly characterized simulation results and indicate ~67% improvement in radius of curvature in comparison to a solid plate design of equivalent mass. [ABSTRACT FROM AUTHOR]

Published
2016
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17. EMIR mechanical design status

Author

Universidad EAFIT. Departamento de Ciencias Básicas, Óptica Aplicada, Fuentes, F. J, Sánchez, Vicente, Barrera, Sonia, Correa, Santiago, Pérez, Jaime, Redondo, Pablo, R. Restrepo, Tenegi, Fabio, Villegas, Alejandro, Patrón, Jesus, Garzón, Francisco, Universidad EAFIT. Departamento de Ciencias Básicas, Óptica Aplicada, Fuentes, F. J, Sánchez, Vicente, Barrera, Sonia, Correa, Santiago, Pérez, Jaime, Redondo, Pablo, R. Restrepo, Tenegi, Fabio, Villegas, Alejandro, Patrón, Jesus, and Garzón, Francisco

Abstract

EMIR is the NIR multi-object imager and spectrograph for the GTC (Gran Telescopio Canarias). The instrument PDR phase was held successfully in March 2003, and we are at present in the middle of the ADR (Advanced Design Phase) during which a number of mech

Published
2021

18. EMIR optomechanics

Author

Universidad EAFIT. Departamento de Ciencias Básicas, Óptica Aplicada, Barrera, Sonia, Villegas, Alejandro, Fuentes, Javier, Correa, Santiago, Pérez, Jaime, Redondo, Pablo, R. Restrepo, Sánchez, Vicente, Tenegi, Fabio, Garzón, Francisco, Patrón, Jesus, Universidad EAFIT. Departamento de Ciencias Básicas, Óptica Aplicada, Barrera, Sonia, Villegas, Alejandro, Fuentes, Javier, Correa, Santiago, Pérez, Jaime, Redondo, Pablo, R. Restrepo, Sánchez, Vicente, Tenegi, Fabio, Garzón, Francisco, and Patrón, Jesus

Abstract

EMIR is a NIR multiobject spectrograph with imaging capabilities to be used at the GTC. A general description of instrument performances, as well as the updated optical and mechanical layouts, can be found elsewhere on these proceedings.

Published
2021

19. Analysis and evaluation of the Full Disk Telescope refocusing mechanism for the Solar Orbiter mission.

Author

Silva-López, Manuel, Garranzo-García, Daniel, Sánchez, Antonio, Bonet-Navarro, Jose Antonio, Nuñez, Armonía, and Álvarez-Herrero, Alberto

Subjects
*OPTICAL space communication systems, *OPTOMECHANICS, *FOURIER transform optics, *OPTICAL engineering, *TELESCOPES
Abstract

The Full Disk Telescope is part of the Polarimetric Helioseismic Instrument on board the future Solar Orbiter ESA/NASA mission. It will provide full-disk measurements of the photospheric magnetic field vector and line-of-sight velocity, as well as the continuum intensity in the visible wavelength range. Along this mission, it is expected that thermal drifts will induce image focus displacements. Consequently, providing an autofocus system is mandatory to prevent image degradation. The refocusing system is based on an autonomous image contrast analysis and it allows for a lens displacement in order to locate the best focus position. The figure of merit chosen for the image quality evaluation is presented. The influences of attitude instability and mechanical uncertainties are considered in a refocusing process simulation. In addition, an engineering model of the mechanism is tested at flight operating conditions. To check its performance, an optical interrogation system is set up. Determination of accuracy and repeatability of the mechanism positioning is experimentally evaluated and discussed according to the ISO standard. The results show that the proposed refocusing system is sufficiently robust against the expected image shifts and mechanical instabilities. [ABSTRACT FROM AUTHOR]

Published
2015
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20. Nanoelectromechanical systems-based metal-insulator-metal plasmonics tunable filter.

Author

Khirallah, Kareem and Swillam, Mohamed A.

Subjects
*NANOELECTROMECHANICAL systems, *NANOSTRUCTURED materials, *NANOSTRUCTURES, *OPTICAL resonance, *NANOSCIENCE
Abstract

Nanoelectromechanical systems (NEMS) design for active resonance frequency tuning of plasmonics optical filter is proposed and discussed. The design is based on controlling the relative position between two stubs in a metal-insulator-metal plasmonics waveguide using NEMS technology. The analysis of the optical design as well as the mechanical design is performed. Finally, a reasonable fabrication process of the device is proposed. For the suggested mechanical design parameters, the optical resonance wavelength can be tuned from 1.45 to 1.65 µm using 7VDC actuation voltage. [ABSTRACT FROM AUTHOR]

Published
2015
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21. Eye-Safe Lidar System for Pesticide Spray Drift Measurement.

Author

Gregorio, Eduard, Rocadenbosch, Francesc, Sanz, Ricardo, and Rosell-Polo, Joan R.

Subjects
*SPRAY droplet drift, *LIDAR, *PESTICIDE toxicology, *OPTOELECTRONICS, *SIGNAL-to-noise ratio, *OPTOMECHANICS
Abstract

Spray drift is one of the main sources of pesticide contamination. For this reason, an accurate understanding of this phenomenon is necessary in order to limit its effects. Nowadays, spray drift is usually studied by using in situ collectors which only allow time-integrated sampling of specific points of the pesticide clouds. Previous research has demonstrated that the light detection and ranging (lidar) technique can be an alternative for spray drift monitoring. This technique enables remote measurement of pesticide clouds with high temporal and distance resolution. Despite these advantages, the fact that no lidar instrument suitable for such an application is presently available has appreciably limited its practical use. This work presents the first eye-safe lidar system specifically designed for the monitoring of pesticide clouds. Parameter design of this system is carried out via signal-to-noise ratio simulations. The instrument is based on a 3-mJ pulse-energy erbium-doped glass laser, an 80-mm diameter telescope, an APD optoelectronic receiver and optomechanically adjustable components. In first test measurements, the lidar system has been able to measure a topographic target located over 2 km away. The instrument has also been used in spray drift studies, demonstrating its capability to monitor the temporal and distance evolution of several pesticide clouds emitted by air-assisted sprayers at distances between 50 and 100 m. [ABSTRACT FROM AUTHOR]

Published
2015
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22. Optomechanical Analysis and Design of Polygon Mirror-Based Laser Scanners

Author

Virgil-Florin Duma, Maria-Alexandra Duma, and Faculty of Science and Engineering

Subjects
Fluid Flow and Transfer Processes, Field-of-View (FOV), Process Chemistry and Technology, General Engineering, multi-parameter analysis, Computer Science Applications, Polygon Mirrors (PMs), scanning function, Finite Element Analysis (FEA), optomechanical design, scanning velocity, Galvanometer Scanners (GSs), laser scanners, General Materials Science, Instrumentation
Abstract

Polygon Mirror (PM)-based scanning heads are one of the fastest and most versatile optomechanical laser scanners. The aim of this work is to develop a multi-parameter opto-mechanical analysis of PMs, from which to extract rules-of-thumbs for the design of such systems. The characteristic functions and parameters of PMs scanning heads are deduced and studied, considering their constructive and functional parameters. Optical aspects related to the kinematics of emergent laser beams (and of corresponding laser spots on a scanned plane or objective lens) are investigated. The PM analysis (which implies a larger number of parameters) is confronted with the corresponding, but less complex aspects of Galvanometer Scanners (GSs). The issue of the non-linearity of the scanning functions of both PMs and GSs (and, consequently, of their variable scanning velocities) is approached, as well as characteristic angles, the angular and linear Field-of-View (FOV), and the duty cycle. A device with two supplemental mirrors is proposed and designed to increase the distance between the GS or PM and the scanned plane or lens to linearize the scanning function (and thus to achieve an approximately constant scanning velocity). These optical aspects are completed with Finite Element Analyses (FEA) of fast rotational PMs, to assess their structural integrity issues. The study is concluded with an optomechanical design scheme of PM-based scanning heads, which unites optical and mechanical aspects—to allow for a more comprehensive approach of possible issues of such scanners. Such a scheme can be applied to other types of optomechanical scanners, with mirrors or refractive elements, as well.

Published
2022

23. A method for screening adhesive materials for small displacements during environmental aging.

Author

Crook, R. A.

Subjects
*ADHESIVES industry, *ADHESIVES, *GLUE, *PAPER, *GLASS
Abstract

This paper discusses the use of etalons fabricated from prepared glass slides to quantify the dimensional stability of two adhesive materials in damp environments. This technique facilitated the screening of adhesives for a kinematically demanding application. In addition to describing the etalon technique, additional data are provided on the performance of the device with the selected adhesives. One of the adhesives is simply identified as a cationic cured adhesive, while the other adhesive was Loctite 3615. A range of adhesive bond gaps from 50 to 500 μm was examined for the adhesive that showed the least displacement resulting from environmental aging. The results of this testing were applied to a kinematically sensitive device for verification of the adhesives use in this geometry. [ABSTRACT FROM AUTHOR]

Published
2004
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24. Optomechanical Design and Analysis for Nanosatellite Laser Communications

Author

Yenchesky, Laura, Cierny, Ondrej, Grenfell, Peter, Kammerer, William, Periera, Paula Do Vale, Sevigny, Tao, and Cahoy, Kerri

Subjects
Laser Communications, Optomechanical Design, Nanosatellite, Analysis
Abstract

The CubeSat Laser Infrared CrosslinK (CLICK) mission is a technology demonstration of a 1.5U laser communications terminal for an intersatellite link. The terminal is deployed on a pair of 3U CubeSats in Low Earth Orbit (LEO). The pointing, acquisition, and tracking (PAT) approach includes both coarse and fine systems. The coarse tracking system uses a beacon laser transmitter and receiver camera. The fine tracking system uses a fast steering mirror and quadrant photodiode. The communications transmit and receive paths include a refractive telescope, transmit laser collimator, and avalanche photodetector (APD) receiver. The communications laser full-width, half maximum (FWHM) beam divergence angle is 14.6 arcseconds, and the beacon laser FWHM divergence is 0:75° (2700 arcseconds). The opto-mechanical design process includes prediction & verification of assembly alignment & calibration, thermoelastic effects, structural modes & static loading, and fastener analysis. The opto-mechanical assembly has the sensors and laser transmitters kinematically mounted to enable on-ground calibration to less than 25.4 mm decenter, or 0.1° tip/tilt. The thermoelastic alignment error between the payload and bus star tracker is estimated via finite element analysis to be less than 9 arcseconds. The payload optical bench is designed with custom thermal isolation and control to maintain 20 ± 10 ° C. The thermal modeling of the payload is described in detail. Structural static loading and fastener analyses of the CLICK payload under launch loads of 30 G verify margins of safety are greater than 10 and above the recommended values. Modal analyses predict the first resonant frequency to be 888 Hz, above typical vehicle structural vibration ranges with a factor of safety greater than 3.5.

Published
2019

25. Opto-mechanical design of a High Contrast Module (HCM) for HARMONI

Author

I. Bryson, K. El Hadi, H. Schnetler, P. Vola, T. Fusco, Christophe Verinaud, J.-F. Sauvage, Matthias Tecza, Fraser Clarke, E. Sradler, Niranjan Thatte, David Mouillet, Kjetil Dohlen, F. Henault, Arthur Vigan, Yves Magnard, G. Chauvin, Alexis Carlotti, Patrick Rabou, M. Bonnefoy, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Erosion torrentielle neige et avalanches (UR ETGR (ETNA)), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), DOTA, ONERA, Université Paris Saclay (COmUE) [Châtillon], ONERA-Université Paris Saclay (COmUE), University of Oxford, Royal Observatory (UKATC), European Southern Observatory (ESO), Centre National d'Études Spatiales [Toulouse] (CNES)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), DOTA, ONERA, Université Paris Saclay [Châtillon], ONERA-Université Paris-Saclay, and University of Oxford [Oxford]

Subjects
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Computer science, media_common.quotation_subject, MIRRORS, 02 engineering and technology, OPTOMECHANICAL DESIGN, 021001 nanoscience & nanotechnology, OPTICAL ALIGNMENT, 01 natural sciences, 010309 optics, CORONAGRAPHY, POINT SPREAD FUNCTIONS, 0103 physical sciences, Mechanical design, Contrast (vision), 0210 nano-technology, IMAGE QUALITY, STARS, media_common, Biomedical engineering
Abstract

International audience; HARMONI is a first-light visible and near-IR integral field spectrograph of ESO's Extremely Large Telescope (ELT) which will sit on top of Cerro Armazones, Chile. A Single Conjugate Adaptive Optics (SCAO) sub-system will provide diffraction-limited spectral images in a Nyquist-sampled 0.61 × 0.86 arcsec field of view, with a R=3000-20000 spectral resolution. Inside the instrument, a High Contrast Module (HCM) will add an essential high-contrast imaging capability for HARMONI to spectrally characterize young giant exoplanets and disks with flux ratio down to 1e-6 at 0.1-0.2" from their star. The HCM uses an apodized pupil coronagraph to lower the intensity of the diffracted starlight and limit the dynamic range on the detector, and an internal wavefront sensor to calibrate non-common path aberrations. This communication first summarizes the basic technical requirements of the HCM, then describes its optical and mechanical designs, and presents expected performance in terms of achievable contrast, image quality and throughput. Elements of the development and test program are also given.

Published
2018

26. Micromachined Polarization Beam Splitter With Adjustable Leak Ratio for Optical Pickup.

Author

Tien, C.H. and Hung, C.H.

Abstract

In this letter, we propose the optomechanical design and fabrication of a novel batched-processed polarization beam splitter (PBS) with an adjustable leak ratio for optical recording applications. The micro-PBS was fabricated by a 410-nm low stress silicon nitride Si3N4 membrane integrated with a bimorph actuator. A dc drive voltage was applied to allow an adjustable leak ratio (0-0.24) with incident angle from 65deg to 75deg for operation in the different optical requirements (phase-change and magneto-optical disks) at lambda = 633 nm. The characteristics of the fabricated PBS are in close agreement with the theoretical calculations and confirm its feasibility. [ABSTRACT FROM PUBLISHER]

Published
2007
Full Text
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27. Design and Testing of the Star Trackers for the SEAM Nanosatellite

Author

Shterev, Nikola

Subjects
Teknik, Technology, image sensor characterization, miniature star tracker, optomechanical design, star catalog, baffle, cubesat, testing
Abstract

Star trackers are instruments for attitude determination and are a must for spacecrafts whereprecise attitude knowledge is needed. Star trackers take accurate images of the stars and thenperform image processing and pattern recognition in order to accurately determine the attitude.This requires high processing power, size and mass of the instrument, which are limited oncubesats.In this thesis work the sensor of a star tracker has been characterized, and calibration andimage correction procedures that require low processing capabilities have been developed. Thethesis work also includes the design of the star tracker in CAD software, with special attentionbeing payed to the baffle due to the limited size available and the importance of stray radiationsuppression. Stray radiation suppression is especially important due to limited ability for correctionson image level. Furthermore, a method for processing the used star catalog has beendeveloped so the stellar brightness in the catalog corresponds to the brightness detected by thestar tracker. Validerat; 20150111 (global_studentproject_submitter)

Published
2015

28. Homogenizovaný osvětlovací zdroj pro mikroskopii

Author

Dostál, Zbyněk, Slabý, Tomáš, Riznerová, Petra, Dostál, Zbyněk, Slabý, Tomáš, and Riznerová, Petra

Abstract

Práce se zabývá návrhem osvětlovacího systému pro homogenní osvit vzorku koherencí řízeného holografického mikroskopu. Teoretická část práce krátce popisuje princip interferenční a holografické mikroskopie v souvislosti s použitím vhodného osvětlovacího systému pro mikroskopii včetně způsobů homogenizace světla. Z této části vychází definice parametrů nového miniaturizovaného zdroje. Práce zahrnuje dva návrhy osvětlovacího systému s rozdílným použitím mikročočkových polí. Jsou provedeny optické simulace, které ověřují správnou volbu všech optických prvků osvětlovacího systému. V návaznosti na optické modely jsou vytvořeny optomechanické návrhy. Ty jsou sestaveny a otestovány. Je měřena světelná účinnost zdrojů i rozložení hodnot intenzity světla v jejich výstupních rovinách., This thesis deals with the design of an illumination system for homogeneous illumination of the sample of a coherence-controlled holographic microscope. The theoretical part of the thesis briefly describes the principle of interference and holographic microscopy in connection with the use of a suitable illumination system for microscopy, including methods of light homogenization. The definition of the parameters of the new miniaturized source is based on this part. The work includes two designs of an illumination system with different use of microlens arrays. Optical simulations are performed, which verify the correct selection of all optical elements of the illumination system. Following the optical models, optomechanical designs are created. These are compiled and tested. The light efficiency of the sources and the distribution of light intensity values in their output planes are measured.

29. Návrh osvětlovacího modulu pro CCHM mikroskop

Author

Dostál, Zbyněk, Špaček, Matěj, Pachl, Přemysl, Dostál, Zbyněk, Špaček, Matěj, and Pachl, Přemysl

Abstract

Tato bakalářská práce se v úvodu věnuje stručnému přehledu základních zobrazovacích metod používaných v klasické a kvantitativní fázové mikroskopii. Hlavním cílem práce je navrhnout, zkonstruovat a odzkoušet tomografický osvětlovač kompatibilní s laboratorní verzí mikroskopu Q-PHASE. Konstrukční řešení je rozloženo do několika částí, kdy v prvním kroku jsou stanoveny optické požadavky soustavy pomocí zákonů geometrické optiky. Následně jsou vybrány vhodné optické komponenty a v softwaru Zemax provedeny simulace k ověření, že jsou všechny stanovené požadavky splněny. Při konstrukci je dbáno na kompaktnost a kompatibilitu sestavy. Proto je k osvětlení amplitudového modulátoru světla použit hranol s totálním vnitřním odrazem. Dále jsou navrhnuta konstrukční řešení uložení zdroje světla, hranolu a amplitudového modulátoru světla. Vypracovaná výkresová dokumentace je přílohou této práce. Celá sestava je složena, seřízena a pomocí 16 testovacích tomografických projekcí ověřena její správná funkce., This bachelor thesis starts with a brief overview of the basic imaging methods used in classical and quantitative phase microscopy. The main aim of the thesis is to design, construct and test a tomographic illuminator compatible with the laboratory version of the Q-PHASE microscope. The design is decomposed into several parts, where in the first step the optical requirements of the system are determined using the laws of geometrical optics. Suitable optical components are then selected and simulations are performed in the Zemax software to verify that all specified requirements are met. The compactness and compatibility of the assembly is taken into account in the design. Therefore, a prism with total internal reflection is used to illuminate the amplitude light modulator. Furthermore, the design solutions for mounting the light source, the prism and the amplitude modulator are proposed. The developed drawings are attached to this thesis. The whole assembly is assembled, adjusted and its correct function is verified by means of 16 test tomographic projections.

30. Návrh osvětlovacího modulu pro CCHM mikroskop

Author

Dostál, Zbyněk, Špaček, Matěj, Pachl, Přemysl, Dostál, Zbyněk, Špaček, Matěj, and Pachl, Přemysl

Abstract

Tato bakalářská práce se v úvodu věnuje stručnému přehledu základních zobrazovacích metod používaných v klasické a kvantitativní fázové mikroskopii. Hlavním cílem práce je navrhnout, zkonstruovat a odzkoušet tomografický osvětlovač kompatibilní s laboratorní verzí mikroskopu Q-PHASE. Konstrukční řešení je rozloženo do několika částí, kdy v prvním kroku jsou stanoveny optické požadavky soustavy pomocí zákonů geometrické optiky. Následně jsou vybrány vhodné optické komponenty a v softwaru Zemax provedeny simulace k ověření, že jsou všechny stanovené požadavky splněny. Při konstrukci je dbáno na kompaktnost a kompatibilitu sestavy. Proto je k osvětlení amplitudového modulátoru světla použit hranol s totálním vnitřním odrazem. Dále jsou navrhnuta konstrukční řešení uložení zdroje světla, hranolu a amplitudového modulátoru světla. Vypracovaná výkresová dokumentace je přílohou této práce. Celá sestava je složena, seřízena a pomocí 16 testovacích tomografických projekcí ověřena její správná funkce., This bachelor thesis starts with a brief overview of the basic imaging methods used in classical and quantitative phase microscopy. The main aim of the thesis is to design, construct and test a tomographic illuminator compatible with the laboratory version of the Q-PHASE microscope. The design is decomposed into several parts, where in the first step the optical requirements of the system are determined using the laws of geometrical optics. Suitable optical components are then selected and simulations are performed in the Zemax software to verify that all specified requirements are met. The compactness and compatibility of the assembly is taken into account in the design. Therefore, a prism with total internal reflection is used to illuminate the amplitude light modulator. Furthermore, the design solutions for mounting the light source, the prism and the amplitude modulator are proposed. The developed drawings are attached to this thesis. The whole assembly is assembled, adjusted and its correct function is verified by means of 16 test tomographic projections.

31. Návrh optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu

Author

Pořízka, Pavel, Samek, Ota, Švábíková, Anna, Pořízka, Pavel, Samek, Ota, and Švábíková, Anna

Abstract

Tato diplomová práce se zabývá návrhem optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu (LIBS). Cílem je vyvinout modul, který bude umožňovat analýzu spektrálních čar zinku v ultrafialové (UV) oblasti. V práci jsou popsány teoretické základy metody LIBS a následně je provedena rešerše zaměřená na problematiku dálkové LIBS analýzy. V diplomové práci jsou prezentovány možné optické návrhy fokusační a sběrné optiky, z nichž jsou vybrané následně otestovány. Výsledkem práce je konstrukční návrh modulu., This diploma thesis deals with the design of an optomechanical module for chemical mapping using the Laser-Induced Breakdown Spectroscopy (LIBS) method. The main goal is to develop a module capable of the analysis of zinc spectral lines in the ultraviolet (UV) region. Basic theory of the LIBS method is described in this work, followed by a research focusing on the remote LIBS analysis. Possible optical designs of focusing and collecting optics are presented in this work. Chosen optical designs were then tested. The output of this work is the final optomechanical design of the module.

32. Homogenizovaný osvětlovací zdroj pro mikroskopii

Author

Dostál, Zbyněk, Slabý, Tomáš, Riznerová, Petra, Dostál, Zbyněk, Slabý, Tomáš, and Riznerová, Petra

Abstract

Práce se zabývá návrhem osvětlovacího systému pro homogenní osvit vzorku koherencí řízeného holografického mikroskopu. Teoretická část práce krátce popisuje princip interferenční a holografické mikroskopie v souvislosti s použitím vhodného osvětlovacího systému pro mikroskopii včetně způsobů homogenizace světla. Z této části vychází definice parametrů nového miniaturizovaného zdroje. Práce zahrnuje dva návrhy osvětlovacího systému s rozdílným použitím mikročočkových polí. Jsou provedeny optické simulace, které ověřují správnou volbu všech optických prvků osvětlovacího systému. V návaznosti na optické modely jsou vytvořeny optomechanické návrhy. Ty jsou sestaveny a otestovány. Je měřena světelná účinnost zdrojů i rozložení hodnot intenzity světla v jejich výstupních rovinách., This thesis deals with the design of an illumination system for homogeneous illumination of the sample of a coherence-controlled holographic microscope. The theoretical part of the thesis briefly describes the principle of interference and holographic microscopy in connection with the use of a suitable illumination system for microscopy, including methods of light homogenization. The definition of the parameters of the new miniaturized source is based on this part. The work includes two designs of an illumination system with different use of microlens arrays. Optical simulations are performed, which verify the correct selection of all optical elements of the illumination system. Following the optical models, optomechanical designs are created. These are compiled and tested. The light efficiency of the sources and the distribution of light intensity values in their output planes are measured.

33. Návrh optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu

Author

Pořízka, Pavel, Samek, Ota, Pořízka, Pavel, and Samek, Ota

Abstract

Tato diplomová práce se zabývá návrhem optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu (LIBS). Cílem je vyvinout modul, který bude umožňovat analýzu spektrálních čar zinku v ultrafialové (UV) oblasti. V práci jsou popsány teoretické základy metody LIBS a následně je provedena rešerše zaměřená na problematiku dálkové LIBS analýzy. V diplomové práci jsou prezentovány možné optické návrhy fokusační a sběrné optiky, z nichž jsou vybrané následně otestovány. Výsledkem práce je konstrukční návrh modulu., This diploma thesis deals with the design of an optomechanical module for chemical mapping using the Laser-Induced Breakdown Spectroscopy (LIBS) method. The main goal is to develop a module capable of the analysis of zinc spectral lines in the ultraviolet (UV) region. Basic theory of the LIBS method is described in this work, followed by a research focusing on the remote LIBS analysis. Possible optical designs of focusing and collecting optics are presented in this work. Chosen optical designs were then tested. The output of this work is the final optomechanical design of the module.

34. Návrh osvětlovacího modulu pro CCHM mikroskop

Author

Dostál, Zbyněk, Špaček, Matěj, Dostál, Zbyněk, and Špaček, Matěj

Abstract

Tato bakalářská práce se v úvodu věnuje stručnému přehledu základních zobrazovacích metod používaných v klasické a kvantitativní fázové mikroskopii. Hlavním cílem práce je navrhnout, zkonstruovat a odzkoušet tomografický osvětlovač kompatibilní s laboratorní verzí mikroskopu Q-PHASE. Konstrukční řešení je rozloženo do několika částí, kdy v prvním kroku jsou stanoveny optické požadavky soustavy pomocí zákonů geometrické optiky. Následně jsou vybrány vhodné optické komponenty a v softwaru Zemax provedeny simulace k ověření, že jsou všechny stanovené požadavky splněny. Při konstrukci je dbáno na kompaktnost a kompatibilitu sestavy. Proto je k osvětlení amplitudového modulátoru světla použit hranol s totálním vnitřním odrazem. Dále jsou navrhnuta konstrukční řešení uložení zdroje světla, hranolu a amplitudového modulátoru světla. Vypracovaná výkresová dokumentace je přílohou této práce. Celá sestava je složena, seřízena a pomocí 16 testovacích tomografických projekcí ověřena její správná funkce., This bachelor thesis starts with a brief overview of the basic imaging methods used in classical and quantitative phase microscopy. The main aim of the thesis is to design, construct and test a tomographic illuminator compatible with the laboratory version of the Q-PHASE microscope. The design is decomposed into several parts, where in the first step the optical requirements of the system are determined using the laws of geometrical optics. Suitable optical components are then selected and simulations are performed in the Zemax software to verify that all specified requirements are met. The compactness and compatibility of the assembly is taken into account in the design. Therefore, a prism with total internal reflection is used to illuminate the amplitude light modulator. Furthermore, the design solutions for mounting the light source, the prism and the amplitude modulator are proposed. The developed drawings are attached to this thesis. The whole assembly is assembled, adjusted and its correct function is verified by means of 16 test tomographic projections.

35. Návrh osvětlovacího modulu pro CCHM mikroskop

Author

Dostál, Zbyněk, Špaček, Matěj, Dostál, Zbyněk, and Špaček, Matěj

Abstract

Tato bakalářská práce se v úvodu věnuje stručnému přehledu základních zobrazovacích metod používaných v klasické a kvantitativní fázové mikroskopii. Hlavním cílem práce je navrhnout, zkonstruovat a odzkoušet tomografický osvětlovač kompatibilní s laboratorní verzí mikroskopu Q-PHASE. Konstrukční řešení je rozloženo do několika částí, kdy v prvním kroku jsou stanoveny optické požadavky soustavy pomocí zákonů geometrické optiky. Následně jsou vybrány vhodné optické komponenty a v softwaru Zemax provedeny simulace k ověření, že jsou všechny stanovené požadavky splněny. Při konstrukci je dbáno na kompaktnost a kompatibilitu sestavy. Proto je k osvětlení amplitudového modulátoru světla použit hranol s totálním vnitřním odrazem. Dále jsou navrhnuta konstrukční řešení uložení zdroje světla, hranolu a amplitudového modulátoru světla. Vypracovaná výkresová dokumentace je přílohou této práce. Celá sestava je složena, seřízena a pomocí 16 testovacích tomografických projekcí ověřena její správná funkce., This bachelor thesis starts with a brief overview of the basic imaging methods used in classical and quantitative phase microscopy. The main aim of the thesis is to design, construct and test a tomographic illuminator compatible with the laboratory version of the Q-PHASE microscope. The design is decomposed into several parts, where in the first step the optical requirements of the system are determined using the laws of geometrical optics. Suitable optical components are then selected and simulations are performed in the Zemax software to verify that all specified requirements are met. The compactness and compatibility of the assembly is taken into account in the design. Therefore, a prism with total internal reflection is used to illuminate the amplitude light modulator. Furthermore, the design solutions for mounting the light source, the prism and the amplitude modulator are proposed. The developed drawings are attached to this thesis. The whole assembly is assembled, adjusted and its correct function is verified by means of 16 test tomographic projections.

36. Homogenizovaný osvětlovací zdroj pro mikroskopii

Author

Dostál, Zbyněk, Slabý, Tomáš, Dostál, Zbyněk, and Slabý, Tomáš

Abstract

Práce se zabývá návrhem osvětlovacího systému pro homogenní osvit vzorku koherencí řízeného holografického mikroskopu. Teoretická část práce krátce popisuje princip interferenční a holografické mikroskopie v souvislosti s použitím vhodného osvětlovacího systému pro mikroskopii včetně způsobů homogenizace světla. Z této části vychází definice parametrů nového miniaturizovaného zdroje. Práce zahrnuje dva návrhy osvětlovacího systému s rozdílným použitím mikročočkových polí. Jsou provedeny optické simulace, které ověřují správnou volbu všech optických prvků osvětlovacího systému. V návaznosti na optické modely jsou vytvořeny optomechanické návrhy. Ty jsou sestaveny a otestovány. Je měřena světelná účinnost zdrojů i rozložení hodnot intenzity světla v jejich výstupních rovinách., This thesis deals with the design of an illumination system for homogeneous illumination of the sample of a coherence-controlled holographic microscope. The theoretical part of the thesis briefly describes the principle of interference and holographic microscopy in connection with the use of a suitable illumination system for microscopy, including methods of light homogenization. The definition of the parameters of the new miniaturized source is based on this part. The work includes two designs of an illumination system with different use of microlens arrays. Optical simulations are performed, which verify the correct selection of all optical elements of the illumination system. Following the optical models, optomechanical designs are created. These are compiled and tested. The light efficiency of the sources and the distribution of light intensity values in their output planes are measured.

37. Homogenizovaný osvětlovací zdroj pro mikroskopii

Author

Dostál, Zbyněk, Slabý, Tomáš, Dostál, Zbyněk, and Slabý, Tomáš

Abstract

Práce se zabývá návrhem osvětlovacího systému pro homogenní osvit vzorku koherencí řízeného holografického mikroskopu. Teoretická část práce krátce popisuje princip interferenční a holografické mikroskopie v souvislosti s použitím vhodného osvětlovacího systému pro mikroskopii včetně způsobů homogenizace světla. Z této části vychází definice parametrů nového miniaturizovaného zdroje. Práce zahrnuje dva návrhy osvětlovacího systému s rozdílným použitím mikročočkových polí. Jsou provedeny optické simulace, které ověřují správnou volbu všech optických prvků osvětlovacího systému. V návaznosti na optické modely jsou vytvořeny optomechanické návrhy. Ty jsou sestaveny a otestovány. Je měřena světelná účinnost zdrojů i rozložení hodnot intenzity světla v jejich výstupních rovinách., This thesis deals with the design of an illumination system for homogeneous illumination of the sample of a coherence-controlled holographic microscope. The theoretical part of the thesis briefly describes the principle of interference and holographic microscopy in connection with the use of a suitable illumination system for microscopy, including methods of light homogenization. The definition of the parameters of the new miniaturized source is based on this part. The work includes two designs of an illumination system with different use of microlens arrays. Optical simulations are performed, which verify the correct selection of all optical elements of the illumination system. Following the optical models, optomechanical designs are created. These are compiled and tested. The light efficiency of the sources and the distribution of light intensity values in their output planes are measured.

38. Homogenizovaný osvětlovací zdroj pro mikroskopii

Author

Dostál, Zbyněk, Slabý, Tomáš, Dostál, Zbyněk, and Slabý, Tomáš

Abstract

Práce se zabývá návrhem osvětlovacího systému pro homogenní osvit vzorku koherencí řízeného holografického mikroskopu. Teoretická část práce krátce popisuje princip interferenční a holografické mikroskopie v souvislosti s použitím vhodného osvětlovacího systému pro mikroskopii včetně způsobů homogenizace světla. Z této části vychází definice parametrů nového miniaturizovaného zdroje. Práce zahrnuje dva návrhy osvětlovacího systému s rozdílným použitím mikročočkových polí. Jsou provedeny optické simulace, které ověřují správnou volbu všech optických prvků osvětlovacího systému. V návaznosti na optické modely jsou vytvořeny optomechanické návrhy. Ty jsou sestaveny a otestovány. Je měřena světelná účinnost zdrojů i rozložení hodnot intenzity světla v jejich výstupních rovinách., This thesis deals with the design of an illumination system for homogeneous illumination of the sample of a coherence-controlled holographic microscope. The theoretical part of the thesis briefly describes the principle of interference and holographic microscopy in connection with the use of a suitable illumination system for microscopy, including methods of light homogenization. The definition of the parameters of the new miniaturized source is based on this part. The work includes two designs of an illumination system with different use of microlens arrays. Optical simulations are performed, which verify the correct selection of all optical elements of the illumination system. Following the optical models, optomechanical designs are created. These are compiled and tested. The light efficiency of the sources and the distribution of light intensity values in their output planes are measured.

39. Návrh osvětlovacího modulu pro CCHM mikroskop

Author

Dostál, Zbyněk, Špaček, Matěj, Dostál, Zbyněk, and Špaček, Matěj

Abstract

Tato bakalářská práce se v úvodu věnuje stručnému přehledu základních zobrazovacích metod používaných v klasické a kvantitativní fázové mikroskopii. Hlavním cílem práce je navrhnout, zkonstruovat a odzkoušet tomografický osvětlovač kompatibilní s laboratorní verzí mikroskopu Q-PHASE. Konstrukční řešení je rozloženo do několika částí, kdy v prvním kroku jsou stanoveny optické požadavky soustavy pomocí zákonů geometrické optiky. Následně jsou vybrány vhodné optické komponenty a v softwaru Zemax provedeny simulace k ověření, že jsou všechny stanovené požadavky splněny. Při konstrukci je dbáno na kompaktnost a kompatibilitu sestavy. Proto je k osvětlení amplitudového modulátoru světla použit hranol s totálním vnitřním odrazem. Dále jsou navrhnuta konstrukční řešení uložení zdroje světla, hranolu a amplitudového modulátoru světla. Vypracovaná výkresová dokumentace je přílohou této práce. Celá sestava je složena, seřízena a pomocí 16 testovacích tomografických projekcí ověřena její správná funkce., This bachelor thesis starts with a brief overview of the basic imaging methods used in classical and quantitative phase microscopy. The main aim of the thesis is to design, construct and test a tomographic illuminator compatible with the laboratory version of the Q-PHASE microscope. The design is decomposed into several parts, where in the first step the optical requirements of the system are determined using the laws of geometrical optics. Suitable optical components are then selected and simulations are performed in the Zemax software to verify that all specified requirements are met. The compactness and compatibility of the assembly is taken into account in the design. Therefore, a prism with total internal reflection is used to illuminate the amplitude light modulator. Furthermore, the design solutions for mounting the light source, the prism and the amplitude modulator are proposed. The developed drawings are attached to this thesis. The whole assembly is assembled, adjusted and its correct function is verified by means of 16 test tomographic projections.

40. Návrh optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu

Author

Pořízka, Pavel, Samek, Ota, Pořízka, Pavel, and Samek, Ota

Abstract

Tato diplomová práce se zabývá návrhem optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu (LIBS). Cílem je vyvinout modul, který bude umožňovat analýzu spektrálních čar zinku v ultrafialové (UV) oblasti. V práci jsou popsány teoretické základy metody LIBS a následně je provedena rešerše zaměřená na problematiku dálkové LIBS analýzy. V diplomové práci jsou prezentovány možné optické návrhy fokusační a sběrné optiky, z nichž jsou vybrané následně otestovány. Výsledkem práce je konstrukční návrh modulu., This diploma thesis deals with the design of an optomechanical module for chemical mapping using the Laser-Induced Breakdown Spectroscopy (LIBS) method. The main goal is to develop a module capable of the analysis of zinc spectral lines in the ultraviolet (UV) region. Basic theory of the LIBS method is described in this work, followed by a research focusing on the remote LIBS analysis. Possible optical designs of focusing and collecting optics are presented in this work. Chosen optical designs were then tested. The output of this work is the final optomechanical design of the module.

41. Návrh optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu

Author

Pořízka, Pavel, Samek, Ota, Pořízka, Pavel, and Samek, Ota

Abstract

Tato diplomová práce se zabývá návrhem optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu (LIBS). Cílem je vyvinout modul, který bude umožňovat analýzu spektrálních čar zinku v ultrafialové (UV) oblasti. V práci jsou popsány teoretické základy metody LIBS a následně je provedena rešerše zaměřená na problematiku dálkové LIBS analýzy. V diplomové práci jsou prezentovány možné optické návrhy fokusační a sběrné optiky, z nichž jsou vybrané následně otestovány. Výsledkem práce je konstrukční návrh modulu., This diploma thesis deals with the design of an optomechanical module for chemical mapping using the Laser-Induced Breakdown Spectroscopy (LIBS) method. The main goal is to develop a module capable of the analysis of zinc spectral lines in the ultraviolet (UV) region. Basic theory of the LIBS method is described in this work, followed by a research focusing on the remote LIBS analysis. Possible optical designs of focusing and collecting optics are presented in this work. Chosen optical designs were then tested. The output of this work is the final optomechanical design of the module.

42. Návrh optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu

Author

Pořízka, Pavel, Samek, Ota, Švábíková, Anna, Pořízka, Pavel, Samek, Ota, and Švábíková, Anna

Abstract

Tato diplomová práce se zabývá návrhem optomechanického modulu pro chemické mapování metodou spektroskopie laserem buzeného plazmatu (LIBS). Cílem je vyvinout modul, který bude umožňovat analýzu spektrálních čar zinku v ultrafialové (UV) oblasti. V práci jsou popsány teoretické základy metody LIBS a následně je provedena rešerše zaměřená na problematiku dálkové LIBS analýzy. V diplomové práci jsou prezentovány možné optické návrhy fokusační a sběrné optiky, z nichž jsou vybrané následně otestovány. Výsledkem práce je konstrukční návrh modulu., This diploma thesis deals with the design of an optomechanical module for chemical mapping using the Laser-Induced Breakdown Spectroscopy (LIBS) method. The main goal is to develop a module capable of the analysis of zinc spectral lines in the ultraviolet (UV) region. Basic theory of the LIBS method is described in this work, followed by a research focusing on the remote LIBS analysis. Possible optical designs of focusing and collecting optics are presented in this work. Chosen optical designs were then tested. The output of this work is the final optomechanical design of the module.

43. Homogenizovaný osvětlovací zdroj pro mikroskopii

Author

Dostál, Zbyněk, Slabý, Tomáš, Riznerová, Petra, Dostál, Zbyněk, Slabý, Tomáš, and Riznerová, Petra

Abstract

Práce se zabývá návrhem osvětlovacího systému pro homogenní osvit vzorku koherencí řízeného holografického mikroskopu. Teoretická část práce krátce popisuje princip interferenční a holografické mikroskopie v souvislosti s použitím vhodného osvětlovacího systému pro mikroskopii včetně způsobů homogenizace světla. Z této části vychází definice parametrů nového miniaturizovaného zdroje. Práce zahrnuje dva návrhy osvětlovacího systému s rozdílným použitím mikročočkových polí. Jsou provedeny optické simulace, které ověřují správnou volbu všech optických prvků osvětlovacího systému. V návaznosti na optické modely jsou vytvořeny optomechanické návrhy. Ty jsou sestaveny a otestovány. Je měřena světelná účinnost zdrojů i rozložení hodnot intenzity světla v jejich výstupních rovinách., This thesis deals with the design of an illumination system for homogeneous illumination of the sample of a coherence-controlled holographic microscope. The theoretical part of the thesis briefly describes the principle of interference and holographic microscopy in connection with the use of a suitable illumination system for microscopy, including methods of light homogenization. The definition of the parameters of the new miniaturized source is based on this part. The work includes two designs of an illumination system with different use of microlens arrays. Optical simulations are performed, which verify the correct selection of all optical elements of the illumination system. Following the optical models, optomechanical designs are created. These are compiled and tested. The light efficiency of the sources and the distribution of light intensity values in their output planes are measured.

44. Návrh osvětlovacího modulu pro CCHM mikroskop

Author

Dostál, Zbyněk, Špaček, Matěj, Pachl, Přemysl, Dostál, Zbyněk, Špaček, Matěj, and Pachl, Přemysl

Abstract

Tato bakalářská práce se v úvodu věnuje stručnému přehledu základních zobrazovacích metod používaných v klasické a kvantitativní fázové mikroskopii. Hlavním cílem práce je navrhnout, zkonstruovat a odzkoušet tomografický osvětlovač kompatibilní s laboratorní verzí mikroskopu Q-PHASE. Konstrukční řešení je rozloženo do několika částí, kdy v prvním kroku jsou stanoveny optické požadavky soustavy pomocí zákonů geometrické optiky. Následně jsou vybrány vhodné optické komponenty a v softwaru Zemax provedeny simulace k ověření, že jsou všechny stanovené požadavky splněny. Při konstrukci je dbáno na kompaktnost a kompatibilitu sestavy. Proto je k osvětlení amplitudového modulátoru světla použit hranol s totálním vnitřním odrazem. Dále jsou navrhnuta konstrukční řešení uložení zdroje světla, hranolu a amplitudového modulátoru světla. Vypracovaná výkresová dokumentace je přílohou této práce. Celá sestava je složena, seřízena a pomocí 16 testovacích tomografických projekcí ověřena její správná funkce., This bachelor thesis starts with a brief overview of the basic imaging methods used in classical and quantitative phase microscopy. The main aim of the thesis is to design, construct and test a tomographic illuminator compatible with the laboratory version of the Q-PHASE microscope. The design is decomposed into several parts, where in the first step the optical requirements of the system are determined using the laws of geometrical optics. Suitable optical components are then selected and simulations are performed in the Zemax software to verify that all specified requirements are met. The compactness and compatibility of the assembly is taken into account in the design. Therefore, a prism with total internal reflection is used to illuminate the amplitude light modulator. Furthermore, the design solutions for mounting the light source, the prism and the amplitude modulator are proposed. The developed drawings are attached to this thesis. The whole assembly is assembled, adjusted and its correct function is verified by means of 16 test tomographic projections.

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