Optical design of light module for head up display based on MOEMS

Zhanjun Yan; Chunlei Du; Wenqiang Li

doi:10.1117/12.2559334

17 April 2020 Optical design of light module for head up display based on MOEMS

Zhanjun Yan, Chunlei Du, Wenqiang Li

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114550O (2020) https://doi.org/10.1117/12.2559334
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

Laser scanning head-up display has the characteristics of small size, high contrast, and no background halo. However, the power of direct modulation laser diode and the driving current of laser driver chip with high frequency about 100 MHz are limited, and the high brightness advantage of laser scanning display is still difficult to play, which also hinders the application and development of this technology. In this paper, a simple and effective light module is designed by using the shaping and coupling technology of multi laser diodes array. Two driving chips and six laser diodes are introduced, which is optimized the layout of laser diodes according to the characteristics of fast and slow axis. Finally, a single beam is projected to the mirror of MOEMS for laser scanning display by optical coupling fiber. The multi laser diodes array significantly reduces the laser coherence and suppresses the laser projection speckle effect. The experimental results show that the light module achieves more than 300 mW laser output power, promotes the brightness of the display, and is conducive to expanding the application of laser scanning display technology in the fields of projection, avionics and vehicle head-up display.

Citation Download Citation

Zhanjun Yan, Chunlei Du, and Wenqiang Li "Optical design of light module for head up display based on MOEMS", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114550O (17 April 2020); https://doi.org/10.1117/12.2559334

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KEYWORDS

Semiconductor lasers

Laser scanners

Collimation

Heads up displays

Optical fibers

Speckle

Fiber lasers

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