The design and fabrication of an optical diffuser for head-up displays

Chi-Hung Lee; Ming-Chieh Chou; Yi-Cheng Chen

doi:10.1117/12.2084680

4 March 2015 The design and fabrication of an optical diffuser for head-up displays

Chi-Hung Lee, Ming-Chieh Chou, Yi-Cheng Chen

Proceedings Volume 9302, International Conference on Experimental Mechanics 2014; 93023Q (2015) https://doi.org/10.1117/12.2084680
Event: International Conference on Experimental Mechanics 2014, 2014, Singapore, Singapore

Abstract

Laser scanning head-up display (HUD) is an off-axis imaging virtual image display system. Its optical design inherited the feature of head-up display architecture in a fighter. When it is applied to a car, its main optics is replaced by a mirror to save space. Usually, a diffusion sheet or frosted glass is placed in front of a pico-projector to be an image screen, but there will be an issue of lower sharpness of the image due to its low divergence ability for the incident beam. This study proposes a pyramid-shaped micro-structure optical diaphragm to replace the above traditional diffusion films. Besides, the relationship between the optical light path and microstructure in the HUD is also well described.

Citation Download Citation

Chi-Hung Lee, Ming-Chieh Chou, and Yi-Cheng Chen "The design and fabrication of an optical diffuser for head-up displays", Proc. SPIE 9302, International Conference on Experimental Mechanics 2014, 93023Q (4 March 2015); https://doi.org/10.1117/12.2084680

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