MEMS scanned laser head-up display

Mark O. Freeman

doi:10.1117/12.879031

14 February 2011 MEMS scanned laser head-up display

Mark O. Freeman

Proceedings Volume 7930, MOEMS and Miniaturized Systems X; 79300G (2011) https://doi.org/10.1117/12.879031
Event: SPIE MOEMS-MEMS, 2011, San Francisco, California, United States

Abstract

Head-up displays (HUD) in automobiles and other vehicles have been shown to significantly reduce accident rates by keeping the driver's eyes on the road. The requirements for automotive HUDs are quite demanding especially in terms of brightness, dimming range, supplied power, and size. Scanned laser display technology is particularly well-suited to this application since the lasers can be very efficiently relayed to the driver's eyes. Additionally, the lasers are only turned on where the light is needed in the image. This helps to provide the required brightness while minimizing power and avoiding a background glow that disturbs the see-through experience. Microvision has developed a couple of HUD architectures that are presented herein. One design uses an exit pupil expander and relay optics to produce a high quality virtual image for built-in systems where the image appears to float above the hood of the auto. A second design uses a patented see-through screen technology and pico projector to make automotive HUDs available to anyone with a projector. The presentation will go over the basic designs for the two types of HUD and discuss design tradeoffs.

Citation Download Citation

Mark O. Freeman "MEMS scanned laser head-up display", Proc. SPIE 7930, MOEMS and Miniaturized Systems X, 79300G (14 February 2011); https://doi.org/10.1117/12.879031

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