05135300 is referenced by 39 patents and cites 12 patents.

Three light fluxes are modulated by corresponding light valves so as to project a color image on a screen. An interference filter for selectively transmitting a light flux which is emitted in a direction perpendicular to a light emitting surface of the interference filter is disposed on the light-emitting portion so as to increase the intensity of light fluxes which are emitted in the forward direction. A light-flux-emitting portion of a light source and the light valve have approximately the same configuration so that the intensity of the light fluxes to be projected on the light valves is increased.

Title
Projection color display apparatus
Application Number
7/645631
Publication Number
5135300
Application Date
January 25, 1991
Publication Date
August 4, 1992
Inventor
Masahiro Usui
Nagaokakyo
JP
Hiroshi Kida
Nagaokakyo
JP
Mitsushige Kondo
Nagaokakyo
JP
Shinsuke Shikama
Nagaokakyo
JP
Eiichi Toide
Nagaokakyo
JP
Assignee
Mitsubishi Denki Kabushiki Kaisha
JP
IPC
G03B 21/28
View Original Source