KR930013857A - Condensing optics of the projector - Google Patents
Condensing optics of the projector Download PDFInfo
- Publication number
- KR930013857A KR930013857A KR1019910022850A KR910022850A KR930013857A KR 930013857 A KR930013857 A KR 930013857A KR 1019910022850 A KR1019910022850 A KR 1019910022850A KR 910022850 A KR910022850 A KR 910022850A KR 930013857 A KR930013857 A KR 930013857A
- Authority
- KR
- South Korea
- Prior art keywords
- film
- illumination light
- liquid crystal
- thin
- projector
- Prior art date
Links
Landscapes
- Projection Apparatus (AREA)
Abstract
이 발명은 박막투과형 액정소자 또는 화상이 기록된 투영필름을 투과하면서 변조되어 투사렌즈에 의해 스크린에 확대투사되는 조명광의 집광효율이 향상되도록 광축으로부터 높이가 증가됨에 따라 굴절율이 증가하는 투명판을 설치함으로써 점유공간이 작아 제품을 소형화 할 수 있도록 한 프로젝터의 집광광학 장치에 관한 것으로서, 상기 박막 투과형 액정소자 또는 투명필름과 상기 조명광원사이의 광축상의 공간에 상기 투명판이 설치된 것이다.The present invention provides a transparent plate whose refractive index increases as the height is increased from the optical axis so that the light collecting efficiency of the illumination light modulated while being transmitted through the thin-film transmissive liquid crystal element or the image is transmitted while being projected onto the screen by the projection lens. The present invention relates to a condensing optical device of a projector, which enables a product to be miniaturized by having a small occupied space. The transparent plate is installed in a space on an optical axis between the thin-film transmissive liquid crystal device or a transparent film and the illumination light source.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제3도는 이 발명에 따른 프로젝터의 집광광학장치를 개략적으로 나타낸 도면이다.3 is a view schematically showing a light converging optical device of a projector according to the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910022850A KR930013857A (en) | 1991-12-13 | 1991-12-13 | Condensing optics of the projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910022850A KR930013857A (en) | 1991-12-13 | 1991-12-13 | Condensing optics of the projector |
Publications (1)
Publication Number | Publication Date |
---|---|
KR930013857A true KR930013857A (en) | 1993-07-22 |
Family
ID=67356321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910022850A KR930013857A (en) | 1991-12-13 | 1991-12-13 | Condensing optics of the projector |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR930013857A (en) |
-
1991
- 1991-12-13 KR KR1019910022850A patent/KR930013857A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |