ApplicationNo. 338521 filed on 04/14/1989
US Classes:349/8, Plural light path projectors353/25, SELECTIVE DATA RETRIEVAL353/31, Multicolor picture353/33, Prism353/34, Plural projection paths with single light source353/122MISCELLANEOUS
ExaminersPrimary: Miller, Stanley D.
Assistant: Gallivan, Richard F.
Attorney, Agent or Firm
Foreign Patent References
International ClassG02F 001/13
Foreign Application Priority Data1984-10-22 JP
AbstractA projection-type display device for producing a faithful colored synthesized image based on equating the luminous intensity distributions and light patterns produced by three twisted nematic liquid crystal light valves for three primary color images. Each light valve includes a twisted nematic liquid crystal composition which is twisted to the right or left depending on the number of times that color light is reflected. Each light valve may include an active switching matrix arranged in mirror-like symmetry with light shield layers also arranged symmetrically.