EP 1590694 A1 20051102 - ANALYZERS FOR TRANSMISSIVE LCD-BASED PROJECTORS
Title (en)
ANALYZERS FOR TRANSMISSIVE LCD-BASED PROJECTORS
Title (de)
ANALYSATOREN FÜRDURCHLÄSSIGE PROJEKTOREN AUF LCD-BASIS
Title (fr)
ANALYSEURS POUR PROJECTEURS TRANSMISSIFS BASES SUR UN AFFICHAGE A CRISTAUX LIQUIDES
Publication
Application
Priority
- IB 2004050018 W 20040114
- EP 03100165 A 20030128
- EP 04702027 A 20040114
Abstract (en)
[origin: WO2004068200A1] The present invention relates to an imaging optical system for transmissive LCD projection-type video image display devices comprising analyzers (1, 10) as well as to a method for arranging such analyzers (1, 10) in such an imaging optical system. The imaging optical system comprises a light source for emitting illumination light, a transmissive liquid crystal light valve (8), a refractive analyzer device (1) arranged to pass light (6) of a first polarization mode in an imaging path and cause an angular deviation of light (7) of a second polarization mode with respect to said imaging path. The imaging system further comprises a reflective analyzer device (1) along said imaging path, and arranged to pass light (6) of the first polarization mode in said imaging path and reflect deviated light (7) of the second polarization mode out of said imaging path.
IPC 1-7
IPC 8 full level
G02B 5/04 (2006.01); G02B 5/30 (2006.01); G02B 27/28 (2006.01); H04N 9/31 (2006.01)
CPC (source: EP KR)
G02B 5/045 (2013.01 - EP); G02B 27/28 (2013.01 - KR); G02B 27/283 (2013.01 - EP); H04N 9/31 (2013.01 - KR); H04N 9/315 (2013.01 - EP)
Citation (search report)
See references of WO 2004068200A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004068200 A1 20040812; CN 1742216 A 20060301; EP 1590694 A1 20051102; JP 2006517034 A 20060713; KR 20050090012 A 20050909; TW 200419290 A 20041001
DOCDB simple family (application)
IB 2004050018 W 20040114; CN 200480002931 A 20040114; EP 04702027 A 20040114; JP 2006502516 A 20040114; KR 20057013942 A 20050728; TW 93101598 A 20040120