[특허]Polarizing wavelength separator

Polarizing wavelength separator 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G02F-001/13
출원번호	US-0726062 (1991-07-05)
발명자 / 주소	Faris Sadeg M. (24 Pocantico River Rd. Pleasantville NY 10570)
인용정보	피인용 횟수 : 169 인용 특허 : 0

초록 ▼

A polarizing wavelength separating optical element, PWS, in the form of a flat panel causes each of a plurality of polychromatic optical beams from a source, entering at one surface and transmitted to the other surface, to be converted with high conversion efficiency into beams circularly polarized, spectrally separated and spatially separated. The input optical beams are identical and in the form of a linear periodic array illuminating the PWS element. Output circularly polarized beams are spatially separated by a variable distance and have separated wavelengths that can be in any order: ascending, descending or random. The PWS is made of a periodic array of cells whose period is identical to that of the optical source. Each cell comprises a plurality of subcells. One subcell functions as a broadband reflector, while each of the remaining subcells functions as a polarizing wavelength selective reflector. The number of the latter subcells depends on the number of wavelengths or wavelength bands to be separated. Each subcell in turn comprises a plurality of layers that are bonded together at their surfaces which are oriented at a 45°angle relative to the horizontal surfaces of the PWS panel. In each subcell, the plurality of layers comprise two cholesteric liquid crystal, CLC, films which reflect at a selected wavelength, at least one phase shifting layer (optical retarder), and an appropriate number of clear substrates which provide mechanical supports. The thicknesses of the supporting substrates are designed to cause the optical beams transmitted through the PWS to be spatially separated by appropriate distances. Direct view displays and projection displays are simplified.

대표청구항 ▼

A polarizing wavelength separating optical element, for accepting from a source a linear periodic array of polychromatic optical beams and converting the beams with high conversion efficiency into beams that are circularly polarized, and separated spectrally and spatially in a selected order of wavelengths having a period identical to that of the source comprising a periodic array of cells whose period is identical to the period of the light source, each cell in turn comprising a broadband reflecting layer arranged to reflect source light into and a plurality of subcells in number related to the number of wavelength bands to be separated, said array having an input surface and an output surface which are in parallel planes; said subcells in turn each comprising a plurality of layers bonded together at an angle to said parallel surface planes of said array, said layers comprising: (b) a plurality of selectively reflecting cholesteric liquid crystal layers (c) at least one phase shifting retarder layer; and (d) a plurality of clear substrates of thickness selected to provide spatial separation between output optical beams.

이 특허를 인용한 특허 (169)

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상세보기
Maheshwari, Dinesh, Tilt-able grating plane for improved crosstalk in 1×N blaze switches.
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Corrigan,Robert W.; Maheshwari,Dinesh, Two-stage gain equalizer.
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Fergason James L., Variable intensity high contrast passive display.
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Faris, Sadeg M.; He, Zhan, Variable optical attenuator based on electrically switchable cholesteric liquid crystal reflective polarizers.
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Roxlo, Charles B., Wavelength selective switch and equalizer.
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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

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Polarizing wavelength separator 원문보기

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Polarizing wavelength separator 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

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이 특허를 인용한 특허 (169)

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