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Since 2008 Optovate have been innovating in Micro‐LED technology and micro‐catadioptric optical systems for display and environmental lighting applications. Results are reported, for the first time, of early demonstrations of array extraction of GaN Micro‐LEDs onto a TFT substrate using a proprietary patterned laser lift‐off process. Techniques to overcome the unique tooling challenges of micro‐catadioptric arrays and example fabricated components are reported. New display implementations are presented that leverage the precise optical beam control of Micro‐LED catadioptric technology and include switchable privacy, outdoors and night mode directional displays; flexible HDR‐LCD backlights; and AR/VR and projection HUD display illumination. [ABSTRACT FROM AUTHOR]

A hybrid of microlens structure and curved surface may produce high value-added micro-optic performance. Hence, the microlens array is proposed on macro curved glass substrate of thin film solar cell. The objective is to understand how the micro-optic behavior of microlens curved array influences indoor power conversion efficiency and outdoor electricity generation. First, the absorptivities of visible light and infrared light were analyzed in connection with the curved microlens sizes; then the microlens curved glass substrate was fabricated by a Computer Numerical Control (CNC) micro-grinding with micro diamond wheel V-tip; finally, its photovoltaic properties and electricity generation were measured, respectively. It is shown that the microlens curved surface may strongly absorb and scatter light to solar cell. It increases the absorptivity of visible light against plane surface, but it decreases the one of infrared light against microlens surface. When it is applied to solar cell, it enhances the power conversion efficiency by 3.4–10.6% under oblique illumination. When it is applied to solar device, it increases the electricity generation of daylight by 119–106% against microlens surface and by 260–419% against traditional plane surface, respectively. The surprising finding is that it produces much larger electricity generation during cloudy day than during sunny day, but traditional plane surface does not so. [ABSTRACT FROM AUTHOR]