KR940022175A - Rear projection screen - Google Patents
Rear projection screen Download PDFInfo
- Publication number
- KR940022175A KR940022175A KR1019930005193A KR930005193A KR940022175A KR 940022175 A KR940022175 A KR 940022175A KR 1019930005193 A KR1019930005193 A KR 1019930005193A KR 930005193 A KR930005193 A KR 930005193A KR 940022175 A KR940022175 A KR 940022175A
- Authority
- KR
- South Korea
- Prior art keywords
- lens
- optical path
- projection
- path changing
- light incident
- Prior art date
Links
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- Projection Apparatus (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
영상표시수단으로 사용되는 배면투사형 스크린이 개시되어 있다. 개시된 스크린은 좁은 공간 내에서의 영상투사가 가능하도록 배려된 것으로서, 투사관으로부터 입사하는 빛을 평행하게 하는 프렌즈넬 렌즈와, 그 평행한 빛으로부터 상을 형성하고 확산시키는 렌티귤러 렌즈, 그리고 투사관으로부터 소정의 입사각으로 입사하는 빛의 광축을 프레즈넬 렌즈에 똑바로 입사시키는 광로변경 렌즈로 구성된다. 이와 같은 배면투사형 스크린은 프로젝션 텔레비젼의 캐비넷 크기를 줄이는데 아주 효과적이다.A rear projection screen for use as an image display means is disclosed. The disclosed screen is designed to allow image projection in a narrow space, and includes a friendsel lens for paralleling light incident from a projection tube, a lenticular lens for forming and diffusing an image from the parallel light, and a projection tube. And an optical path changing lens for directly injecting an optical axis of light incident at a predetermined angle of incidence from the Fresnel lens. Such a rear projection screen is very effective in reducing the cabinet size of a projection television.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제4도는 본 발명에 의한 배면투사 스크린의 사시도.4 is a perspective view of the rear projection screen according to the present invention.
제5도는 본 발명에 의한 배면투사형 스크린의 일부를 확대하여 나타낸 단면도.Figure 5 is an enlarged cross-sectional view showing a part of the rear projection screen according to the present invention.
제6도는 본 발명에 의한 배면투사형 스크린이 채용된 프로젝션 텔레비젼의 측면 배치도.6 is a side view of a projection television employing a rear projection screen according to the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930005193A KR940022175A (en) | 1993-03-31 | 1993-03-31 | Rear projection screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930005193A KR940022175A (en) | 1993-03-31 | 1993-03-31 | Rear projection screen |
Publications (1)
Publication Number | Publication Date |
---|---|
KR940022175A true KR940022175A (en) | 1994-10-20 |
Family
ID=66912160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930005193A KR940022175A (en) | 1993-03-31 | 1993-03-31 | Rear projection screen |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR940022175A (en) |
-
1993
- 1993-03-31 KR KR1019930005193A patent/KR940022175A/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 | ||
WITB | Written withdrawal of application |