[특허]Light source for liquid crystal display panels utilizing internally reflecting light pipes and integrating sphere

Light source for liquid crystal display panels utilizing internally reflecting light pipes and integrating sphere 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G02F-001/13
출원번호	US-0941002 (1986-12-12)
발명자 / 주소	Henkes John L. (Latham NY)
출원인 / 주소	General Electric Co. (Schenectady NY 02)
인용정보	피인용 횟수 : 91 인용 특허 : 0

초록 ▼

This invention relates to a collimated light source for a flat panel liquid crystal display which uses a high intensity light source positioned in an integrating sphere. One or more tapered light pipes have their narrow end(s) positioned in an opening in the integrating sphere. Light from the integrating sphere is internally reflected in the light pipes(s) to produce a relatively collimated output beam which is projected onto one surface of the liquid crystal panel display. This invention relates to a light source for a liquid crystal panel display and, more particularly, to a collimated light source utilizing light pipes and an integrating light sphere.

대표청구항 ▼

A high contrast ratio liquid crystal display including: (a) a liquid crystal display; (b) a collimated light source positioned to illuminate one side of said display comprising; (1) a light integrating sphere having an interior reflecting surface for a source of uncollimated light, said integrating sphere uniformly distributing the uncollimated light, and having an opening to permit a portion of the uncollimated light reflected from the interior surface to exit from the sphere; (2) tapered elongated light pipe means, one end of said light pipe positioned adjacent to said opening to intercept light emitted from said sphere and the other end of said light pipe means being positioned adjacent to said display whereby light from said sphere is internally reflected in said light pipe means and exits from said other end as a collimated light beam. A collimated light source comprising: (a) a light integrating sphere, said sphere having an internal layer for uniformly distributing and reflecting uncollimated light; (b) a source of uncollimated light positioned in said sphere; (c) said sphere having an opening over a portion of its surface to permit a - - portion of the uniformly distributed light from the source to exit from the sphere; (d) elongated light pipe means having one end positioned adjacent the said opening to intercept light emitted from said sphere; (e) said light pipe means being tapered for substantially totally internally reflecting light introduced at said one end whereby light emitted at the other end of said light pipe means is substantially collimated.

이 특허를 인용한 특허 (91)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Light source for liquid crystal display panels utilizing internally reflecting light pipes and integrating sphere 원문보기

초록 ▼

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연구과제 타임라인

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Light source for liquid crystal display panels utilizing internally reflecting light pipes and integrating sphere 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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