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Irradiance formations of on-axis Lambertian pointlike sources in polygonal total-internal-reflection straight light pipes
- Source :
- Journal of the Optical Society of America. A, Optics, image science, and vision. 24(9)
- Publication Year :
- 2007
-
Abstract
- Different geometric shapes of light pipes cause different irradiance distributions. We analytically explore the irradiance distributions of on-axis Lambertian pointlike sources in polygonal total-internal-reflection (TIR) straight light pipes. It is analytically shown that the irradiance of pentagonal light pipes concentrates on the center of the exit plane. Numerical verifications are also provided, and experimental explorations with different shapes of acrylic light pipes are carried out for comparison. We also analyze the influence of light-pipe length on distribution uniformity and deduce the smallest uniform-mixing length/circumradius ratios for polygonal light pipes.
- Subjects :
- Physics
Total internal reflection
business.industry
Irradiance
Geometric shape
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Physics::Fluid Dynamics
Optics
Physics::Accelerator Physics
Light beam
Distribution uniformity
Computer Vision and Pattern Recognition
Exit plane
Circumscribed circle
business
Refractive index
Subjects
Details
- ISSN :
- 10847529
- Volume :
- 24
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Journal of the Optical Society of America. A, Optics, image science, and vision
- Accession number :
- edsair.doi.dedup.....9e001ad3a0519dd1b3ddc3b4141f0229