KR100327197B1 - 색균일도를개선한액정프로젝터 - Google Patents
색균일도를개선한액정프로젝터 Download PDFInfo
- Publication number
- KR100327197B1 KR100327197B1 KR1019950038239A KR19950038239A KR100327197B1 KR 100327197 B1 KR100327197 B1 KR 100327197B1 KR 1019950038239 A KR1019950038239 A KR 1019950038239A KR 19950038239 A KR19950038239 A KR 19950038239A KR 100327197 B1 KR100327197 B1 KR 100327197B1
- Authority
- KR
- South Korea
- Prior art keywords
- liquid crystal
- light
- light source
- crystal projector
- crystal display
- 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
- H04N9/30—Picture reproducers using solid-state colour display devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
-
- 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]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
-
- 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]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3167—Modulator illumination systems for polarizing the light beam
Abstract
Description
Claims (3)
- 광원과, 이 광원에서 출사된 빔을 그 파장영역에 따라 투과 또는 반사시키는 복수의 이색미러와, 이 이색미러에서 투과 또는 반사된 광을 받아 소정 칼라화상을 형성하는 복수의 액정표시소자와, 광경로 상의 소정 위치에 설치되어 광을 반사시키는 복수개의 반사미러와, 상기 복수의 액정표시소자들에서 형성된 화상을 조합하여 스크린에 투영하는 투사렌즈를 구비한 액정프로젝터에 있어서,상기 광원과 상기 투사렌즈 사이의 최단 광경로 상에 놓인 액정표시소자의 편광판 전면에 설치되어,입사광의 편광특성을 바꾸어주는 위상지연판을 포함하는 것을 특징으로 하는 색균일도를 개선한 액정프로젝터.
- 제1항에 있어서, 상기 위상지연판은 1/4 파장판인 것을 특징으로 하는 색균일도를 개선한 액정프로젝터.
- 제1항에 있어서, 상기 광원과 상기 이색미러들 사이의 광경로 상에 설치되어, 자외선광을 차단하는 콜드미러와, 적외선광을 차단하는 핫미러가 더 구비된 것을 특징으로 하는 색균일도를 개선한 액정프로젝터.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950038239A KR100327197B1 (ko) | 1995-10-30 | 1995-10-30 | 색균일도를개선한액정프로젝터 |
US08/707,238 US5829852A (en) | 1995-10-30 | 1996-09-03 | Liquid crystal projector having improved color uniformity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950038239A KR100327197B1 (ko) | 1995-10-30 | 1995-10-30 | 색균일도를개선한액정프로젝터 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970025200A KR970025200A (ko) | 1997-05-30 |
KR100327197B1 true KR100327197B1 (ko) | 2002-06-28 |
Family
ID=19432011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950038239A KR100327197B1 (ko) | 1995-10-30 | 1995-10-30 | 색균일도를개선한액정프로젝터 |
Country Status (2)
Country | Link |
---|---|
US (1) | US5829852A (ko) |
KR (1) | KR100327197B1 (ko) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6089718A (en) * | 1996-10-30 | 2000-07-18 | Seiko Epson Corporation | Projection display device |
KR100219638B1 (ko) * | 1997-05-27 | 1999-09-01 | 윤종용 | 반사형 프로젝트 장치 |
US6082861A (en) * | 1998-09-16 | 2000-07-04 | International Business Machines Corporation | Optical system and method for high contrast projection display |
US6307607B1 (en) | 1999-12-21 | 2001-10-23 | Philips Electronics North America Corporation | Reflective liquid crystal display with integrated compensation for skew angle rotation and birefringence effects |
TWI269012B (en) * | 2005-12-21 | 2006-12-21 | Coretronic Corp | Illumination system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02151848A (ja) * | 1988-12-05 | 1990-06-11 | Sharp Corp | 投影型カラー表示装置 |
US5541673A (en) * | 1993-09-03 | 1996-07-30 | Nec Corporation | Projector having a halfwave plate disposed in light-leaving side of a light valve |
BE1007592A3 (nl) * | 1993-10-06 | 1995-08-16 | Philips Electronics Nv | Reflecterend beeldprojectiescherm en beeldprojectiesysteem bevattende een dergelijk beeldprojectiescherm. |
US5374968A (en) * | 1993-11-08 | 1994-12-20 | Greyhawk Systems, Inc. | Optics for a single-lens video projector with color-specific polarization channels |
KR0130606B1 (ko) * | 1994-07-30 | 1998-04-11 | 배순훈 | 입체형 프로젝터(Projector) |
-
1995
- 1995-10-30 KR KR1019950038239A patent/KR100327197B1/ko not_active IP Right Cessation
-
1996
- 1996-09-03 US US08/707,238 patent/US5829852A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR970025200A (ko) | 1997-05-30 |
US5829852A (en) | 1998-11-03 |
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