KR940022175A - Rear projection screen - Google Patents

Rear projection screen Download PDF

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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
Application number
KR1019930005193A
Other languages
Korean (ko)
Inventor
유장훈
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019930005193A priority Critical patent/KR940022175A/en
Publication of KR940022175A publication Critical patent/KR940022175A/en

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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

배면투사 스크린Rear projection screen

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)

투사관으로부터 입사하는 빛을 평행하게 하는 프렌즈넬 렌즈와, 그 평행한 빛으로부터 상을 형성하고 확산시키는 렌티귤러 렌즈와, 상기 프레즈넬 렌즈의 후방에 위치하며, 상기 투사관으로부터 입사하는 빛의 광로를 굴절시켜 그 광로의 광축이 프레즈넬 렌즈에 수직으로 입사되게 하는 광로변경 스크린부재를 포함하여 된 것을 특징으로 하는 배면투사 스크린.A friendsel lens for paralleling the light incident from the projection tube, a lenticular lens for forming and diffusing an image from the parallel light, and an optical path of light incident from the projection tube located behind the Fresnel lens And an optical path changing screen member for refracting the optical axis so that the optical axis of the optical path is incident perpendicularly to the Fresnel lens. 제1항에 있어서, 상기 광로변경 스크린부재가,According to claim 1, wherein the optical path changing screen member, 단, γ : 광로변경 렌즈의 프리즘 요소의 경사각,Where γ is the inclination angle of the prism element of the optical path changing lens, θ(y) : 투사관의 수직성분 수렴각,θ (y): convergence angle of the vertical component of the projection tube, ηs: 광로변경 렌즈의 굴절률.η s : refractive index of the optical path changing lens. 의 조건을 충족하여 되는 것을 특징으로 하는 배면투사 스크린.Rear projection screen, characterized in that to meet the conditions of. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930005193A 1993-03-31 1993-03-31 Rear projection screen KR940022175A (en)

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)

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