[특허]Visual display apparatus

Visual display apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G02B-027/14
출원번호	US-0451014 (1995-05-25)
우선권정보	JP-0127453 (1994-06-09)
발명자 / 주소	Togino Takayoshi,JPX Tabata Seiichiro,JPX
출원인 / 주소	Olympus Optical Co., Ltd., JPX
대리인 / 주소	Cushman, Darby & Cushman IP Group of Pillsbury, Madison & Sutro LLP
인용정보	피인용 횟수 : 57 인용 특허 : 0

초록 ▼

A small-sized, lightweight and inexpensive visual display apparatus which enables observation of a full-color image at a wide field angle, which is clear and flat as far as the edges thereof, without using a costly element such as a polarizing element. The visual display apparatus has an image display device (4), and an ocular optical system for projecting an image formed by the image display device (4) and for leading the projected image to an observer's eyeball. The image display device (4) has a louver (10) for limiting the viewing angle. The ocular optical system has two semitransparent surfaces (2 and 3). The second semitransparent surface (3) is a curved surface which is concave toward the observer's eyeball side, so that light rays emanating from the image display device (4) first pass through the second semitransparent curved surface (3), and are reflected by the first semitransparent surface (2). The reflected light rays are further reflected by the second semitransparent curved surface (3), and then pass through the first semitransparent surface (2) to enter the observer's eyeball. Further, the two semitransparent surfaces (2 and 3) are disposed such that at least the first semitransparent surface (2) is decentered with respect to the observer's visual axis directed to see the center of the projected image.

대표청구항 ▼

[ What we claim is:] [1.] A visual display apparatus comprising:an image display means for displaying an image; andan ocular optical system for projecting an image formed by said image-display means and for leading the projected image to an observer's eyeball;said image-display means having means for limiting a viewing angle;said ocular optical system having at least two semitransparent surfaces being defined as first and second semitransparent surfaces in order from the observer's eyeball side,said second semitransparent surface being a curved surface which is concave toward the observer's eyeball side, so that light rays emanating from said image display means first pass through said second semitransparent curved surface, and are reflected by said first semitransparent surface, and the reflected light rays are further reflected by said second semitransparent curved surface, and then pass through said first semitransparent surface to enter the observer's eyeball, andsaid at least two semitransparent surfaces being disposed such that at least said first semitransparent surface is decentered with respect to an observer's visual axis directed to see a center of the projected image,wherein said means for limiting a viewing angle is a louver optical system.

이 특허를 인용한 특허 (57)

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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
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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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Visual display apparatus 원문보기

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Visual display apparatus 원문보기

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