G - Physics – 02 – F
Patent
G - Physics
02
F
88/46
G02F 1/13 (2006.01) G02B 5/30 (2006.01) G02B 27/01 (2006.01) G02B 27/14 (2006.01) G09B 9/32 (2006.01) G02B 27/00 (2006.01)
Patent
CA 1293873
HEADS-UP DISPLAY COMBINER UTILIZING A CHOLESTERIC LIOUID CRYSTAL ELEMENT ABSTRACT OF THE DISCLOSURE A heads-up display (HUD) system employs a cholesteric liquid crystal combiner, an image source, and collimating optics to combine a generated image with an image in an observer's field of view. The cholesteric liquid crystal combiner has a bandwidth, B, around a primary wavelength of maximum reflection, and the image source projects its images within bandwidth B for high efficiency of reflection. Outside bandwidth B the cholesteric combiner has a high efficiency of trans- mission. Images from the image source are projected upon the combiner which reflects the images toward the observer, together with images from the outside environ- ment in the line-of-sight of the observer. Collimating optics are used to focus the projected images at a dis- tance away from the observer.
568060
Kaiser Aerospace And Electronics Corporation
Smart & Biggar
LandOfFree
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