From Event: SPIE Optical Engineering + Applications, 2016
Head-up Display (HUD) is a safety feature for automobile drivers. Although there have been some HUD systems in commercial product already, their images are too small to show assistance information. Another problem, the volume of HUD is too large. We proposed a HUD including micro-projectors, rear-projection screen, microlens array (MLA) and the light source is 28 mm x 14 mm realized a 200 mm x 100 mm image in 3 meters from drivers. We want to use the MLA to reduce the volume by virtual image stitching. We design the HUD’s package dimensions is 12 cm x 12 cm x 9 cm. It is able to show speed, map-navigation and night vision information. We used Liquid Crystal Display (LCD) as our image source due to its brighter image output required and the minimum volume occupancy. The MLA is a multi aperture system. The proposed MLA consists of many optical channels each transmitting a segment of the whole field of view. The design of the system provides the stitching of the partial images, so that we can see the whole virtual image.
Yi-Feng Chiu and Guo-Dung J. Su, "Reduce volume of head-up display by image stitching," Proc. SPIE 9947, Current Developments in Lens Design and Optical Engineering XVII, 99470E (Presented at SPIE Optical Engineering + Applications: August 31, 2016; Published: 28 September 2016); https://doi.org/10.1117/12.2236900.
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