KR980007620A - Lighting equipment for liquid crystal projects - Google Patents
Lighting equipment for liquid crystal projects Download PDFInfo
- Publication number
- KR980007620A KR980007620A KR1019960025213A KR19960025213A KR980007620A KR 980007620 A KR980007620 A KR 980007620A KR 1019960025213 A KR1019960025213 A KR 1019960025213A KR 19960025213 A KR19960025213 A KR 19960025213A KR 980007620 A KR980007620 A KR 980007620A
- Authority
- KR
- South Korea
- Prior art keywords
- light
- opening
- reflecting means
- reflecting
- liquid crystal
- 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]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Projection Apparatus (AREA)
Abstract
본 발명은 액정프로젝트의 조명장치에 관한 것으로서, 광원 및 광원이 위치되는 제1초점과 광원에서 방사된 광을 반사시켜 제2초점에 수렴시키는 타원형 반사경 및 타원형 반사기의 제2초점위치에 배치되어 타원형반사경에서 반사된 광을 선택적으로 투과시키는 개구부를 갖는 광제어판, 개구부외로 광제어판에 입사되는 광을 반사시키도록 개구부주위에 부착된 제1반사수단, 제1반사수단에서 반사된 광을 되반사시켜 개구부를 통해 투과시키는 제2반사수단을 구비함으로써, 타원형반사경으로부터 반사되어 광제어판의 개구부를 직접통과하지 못하는 무효광을 제1반사수단 및 제2반사수단에 의해 개구부내로 재집속하기 때문에 광이용효율이 증대된다.The present invention relates to a lighting device for a liquid crystal project, which comprises a first focal point in which a light source and a light source are located, an elliptical reflector for reflecting light emitted from the light source and converging on a second focal point, A light control plate having an opening for selectively transmitting light reflected from the reflector, a first reflecting means attached around the opening to reflect the light incident on the light control plate outside the opening, And the second reflecting means for transmitting the light through the opening. Therefore, since the ineffective light reflected by the elliptical reflecting mirror and unable to directly pass through the opening of the optical control plate is re-focused into the opening by the first reflecting means and the second reflecting means, Is increased.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제1도는 액정프로젝트의 종래 조명장치의 광학적 구성을 개략적으로 도시한 것이다.Figure 1 schematically shows the optical configuration of a conventional illumination device of a liquid crystal project.
제2도는 본 발명에 따른 액정프로젝트의 조명장치의 광학적 구성을 개략적으로 도시한 것이다.FIG. 2 schematically shows an optical configuration of a lighting apparatus of a liquid crystal project according to the present invention.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960025213A KR100188957B1 (en) | 1996-06-28 | 1996-06-28 | Lighting device for lcd projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960025213A KR100188957B1 (en) | 1996-06-28 | 1996-06-28 | Lighting device for lcd projector |
Publications (2)
Publication Number | Publication Date |
---|---|
KR980007620A true KR980007620A (en) | 1998-03-30 |
KR100188957B1 KR100188957B1 (en) | 1999-06-01 |
Family
ID=19464354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960025213A KR100188957B1 (en) | 1996-06-28 | 1996-06-28 | Lighting device for lcd projector |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100188957B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100890736B1 (en) | 2008-02-22 | 2009-03-26 | (주)이즈미디어 | Image sensor detection lighting device and image sensor detection machine |
-
1996
- 1996-06-28 KR KR1019960025213A patent/KR100188957B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR100188957B1 (en) | 1999-06-01 |
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Legal Events
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A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20071221 Year of fee payment: 10 |
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LAPS | Lapse due to unpaid annual fee |