Title:
【発明の名称】観察者の視線内に像を投影する方法及び装置
Document Type and Number:
Japanese Patent JP2564366
Kind Code:
B2
Abstract:
A heads-up display (HUD) system employs a cholesteric liquid crystal combiner (20), an image source (22), and collimating optics (24) 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 transmission. Images from the image source are projected upon the combiner which reflects the images toward the observer, together with images from the outside environment in the line-of-sight of the observer. Collimating optics are used to focus the projected images at a distance away from the observer.
Inventors:
AASAA RUISU BAAMAN
Application Number:
JP15456688A
Publication Date:
December 18, 1996
Filing Date:
June 22, 1988
Export Citation:
Assignee:
KAIZAA EAROSUPEESU ANDO EREKUTORONIKUSU CORP
International Classes:
G02B5/30; G02B27/01; G02B27/10; G02F1/13; B64D45/08; G09B9/08; G09B9/16; G09B9/32; G09F9/00; G02B27/00; (IPC1-7): G02B27/02; B64D45/08; G02B27/10; G02F1/13; G09F9/00
Attorney, Agent or Firm:
Minoru Nakamura (4 outside)