Using micro-projectors to realize large screen head-up Display
Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
8486
Date Issued
2012
Author(s)
Weng, C.-P.
Abstract
A head-up Display, HUD, is a safety feature for automobile drivers. Although there have been some HUD systems in commercial already, their images are too small to show assistance information. We demonstrated a HUD including micro-projectors, rear-projection screen and a Fresnel lens and realized a 14 inches image on the windshield. It is able to show speed, map-navigation and night vision information. We adopted digital light processing, DLP, as our image source because of its brighter image output required. To minimize the model volume, we applied a Fresnel lens to magnify the images from DLP projector. The size of the HUD model is 390 mm × 274 mm × 117 mm. It shows a virtual image 1.5 meters from windshields and the brightness is 378 nits which is clear enough to be seen by drivers even during daytime. Besides, it can also display information on a 7 inches instrument panel simultaneously.
Type
conference paper