KR890702375A - 4색 액정 광밸브 영상 투사기용 단일 선편광 프리즘 조립체 - Google Patents
4색 액정 광밸브 영상 투사기용 단일 선편광 프리즘 조립체Info
- Publication number
- KR890702375A KR890702375A KR1019890700533A KR890700533A KR890702375A KR 890702375 A KR890702375 A KR 890702375A KR 1019890700533 A KR1019890700533 A KR 1019890700533A KR 890700533 A KR890700533 A KR 890700533A KR 890702375 A KR890702375 A KR 890702375A
- Authority
- KR
- South Korea
- Prior art keywords
- liquid crystal
- light valve
- linear polarization
- crystal light
- color liquid
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Liquid Crystal (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1013,480 | 1987-07-27 | ||
US07/013,480 US4824214A (en) | 1987-07-27 | 1987-07-27 | Unitary prepolarizing prism assembly for a four color liquid crystal light valve image projector |
PCT/US1988/002156 WO1989001272A1 (en) | 1987-07-27 | 1988-06-22 | Unitary prepolarizing prism assembly for a four color liquid crystal light valve image projector |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890702375A true KR890702375A (ko) | 1989-12-23 |
KR920009078B1 KR920009078B1 (ko) | 1992-10-13 |
Family
ID=21760172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019890700533A KR920009078B1 (ko) | 1987-07-27 | 1988-06-22 | 4색 액정 광밸브 영상 투사기용 단일 선편광 프리즘 조립체 |
Country Status (5)
Country | Link |
---|---|
US (1) | US4824214A (ko) |
EP (1) | EP0325649A1 (ko) |
JP (1) | JPH02500865A (ko) |
KR (1) | KR920009078B1 (ko) |
WO (1) | WO1989001272A1 (ko) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0324147A3 (en) * | 1988-01-11 | 1990-07-04 | Seiko Epson Corporation | Light guide type display apparatus |
JPH02153336A (ja) * | 1988-12-05 | 1990-06-13 | Sharp Corp | 投影型液晶表示装置 |
US4911547A (en) * | 1989-06-07 | 1990-03-27 | Hughes Aircraft Company | Compact optical system for a single light valve projector using two axes of polarization |
EP0435288B1 (en) * | 1989-12-28 | 1996-09-18 | Canon Kabushiki Kaisha | Image projector |
US5267029A (en) * | 1989-12-28 | 1993-11-30 | Katsumi Kurematsu | Image projector |
JPH04230705A (ja) * | 1990-05-18 | 1992-08-19 | Canon Inc | 偏光変換装置、該偏光変換装置を備えた偏光照明装置および該偏光照明装置を有する投写型表示装置 |
US5111315A (en) * | 1991-02-14 | 1992-05-05 | Hughes Aircraft Company | Optical system for illuminating a light valve |
US6769792B1 (en) | 1991-04-30 | 2004-08-03 | Genlyte Thomas Group Llc | High intensity lighting projectors |
US5758956A (en) * | 1991-04-30 | 1998-06-02 | Vari-Lite, Inc. | High intensity lighting projectors |
US5282121A (en) * | 1991-04-30 | 1994-01-25 | Vari-Lite, Inc. | High intensity lighting projectors |
US5347433A (en) * | 1992-06-11 | 1994-09-13 | Sedlmayr Steven R | Collimated beam of light and systems and methods for implementation thereof |
GB9409707D0 (en) * | 1994-05-14 | 1994-07-06 | Philips Electronics Uk Ltd | Liquid crystal projection display systems |
US6704065B1 (en) * | 1995-04-07 | 2004-03-09 | Colorlink, Inc. | Optical system for producing a modulated color image |
US5975703A (en) | 1996-09-30 | 1999-11-02 | Digital Optics International | Image projection system |
EP2247978A4 (en) | 2008-01-30 | 2012-12-26 | Qualcomm Mems Technologies Inc | THIN LIGHTING SYSTEM |
US8721149B2 (en) | 2008-01-30 | 2014-05-13 | Qualcomm Mems Technologies, Inc. | Illumination device having a tapered light guide |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2958258A (en) * | 1953-09-21 | 1960-11-01 | Technicolor Corp | Optical projection of beam controlled object fields |
GB1332304A (en) * | 1969-11-27 | 1973-10-03 | Barr & Stroud Ltd | Colour separating systems |
US4127322A (en) * | 1975-12-05 | 1978-11-28 | Hughes Aircraft Company | High brightness full color image light valve projection system |
US4019807A (en) * | 1976-03-08 | 1977-04-26 | Hughes Aircraft Company | Reflective liquid crystal light valve with hybrid field effect mode |
US4191456A (en) * | 1979-03-08 | 1980-03-04 | Hughes Aircraft Company | Optical block for high brightness full color video projection system |
US4345258A (en) * | 1980-12-15 | 1982-08-17 | The Singer Company | Color display system |
US4544237A (en) * | 1981-12-28 | 1985-10-01 | Hughes Aircraft Company | High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization |
US4461542A (en) * | 1981-12-28 | 1984-07-24 | Hughes Aircraft Company | High efficiency optical tank for three color liquid crystal light valve image projection with color selective prepolarization |
JPS58117534A (ja) * | 1981-12-28 | 1983-07-13 | ヒューズ・エアクラフト・カンパニー | 投影装置 |
DE3276994D1 (en) * | 1981-12-28 | 1987-09-17 | Hughes Aircraft Co | High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization |
US4464018A (en) * | 1981-12-28 | 1984-08-07 | Hughes Aircraft Company | Liquid crystal light valve image projection system with color selective prepolarization and blue mirror |
US4464019A (en) * | 1981-12-28 | 1984-08-07 | Hughes Aircraft Company | Two-color liquid crystal light valve image projection system with color selective prepolarizers in single optical tank |
EP0083440B1 (en) * | 1981-12-28 | 1987-08-19 | Hughes Aircraft Company | Two-color liquid crystal light valve image projection system with prepolarization |
DE3277280D1 (en) * | 1981-12-28 | 1987-10-15 | Hughes Aircraft Co | High efficiency optical system for three-color liquid crystal light valve image projection with color selective prepolarization |
US4425028A (en) * | 1981-12-28 | 1984-01-10 | Hughes Aircraft Company | High efficiency optical tank for three color liquid crystal light valve image projection with color selective prepolarization and single projection lens |
US4500172A (en) * | 1981-12-28 | 1985-02-19 | Hughes Aircraft Company | Two color liquid crystal light valve image projection system with single prepolarizer |
US4715684A (en) * | 1984-06-20 | 1987-12-29 | Hughes Aircraft Company | Optical system for three color liquid crystal light valve image projection system |
US4687301A (en) * | 1985-07-12 | 1987-08-18 | Hughes Aircraft Company | Full-color projector system with a tricolor-separating prism |
US4690526A (en) * | 1985-09-12 | 1987-09-01 | Hughes Aircraft Company | Prism assembly for a single light valve full-color projector |
-
1987
- 1987-07-27 US US07/013,480 patent/US4824214A/en not_active Expired - Fee Related
-
1988
- 1988-06-22 EP EP88907459A patent/EP0325649A1/en not_active Withdrawn
- 1988-06-22 WO PCT/US1988/002156 patent/WO1989001272A1/en not_active Application Discontinuation
- 1988-06-22 JP JP63506890A patent/JPH02500865A/ja active Pending
- 1988-06-22 KR KR1019890700533A patent/KR920009078B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0325649A1 (en) | 1989-08-02 |
WO1989001272A1 (en) | 1989-02-09 |
KR920009078B1 (ko) | 1992-10-13 |
JPH02500865A (ja) | 1990-03-22 |
US4824214A (en) | 1989-04-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
LAPS | Lapse due to unpaid annual fee |