[특허]Image display apparatus

Image display apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G02B-027/14 G02B-013/08 G02B-017/00
출원번호	US-0541531 (1995-10-10)
우선권정보	JP-0290892 (1994-11-25)
발명자 / 주소	Takahashi Koichi,JPX
출원인 / 주소	Olympus Optical Co., Ltd., JPX
대리인 / 주소	Cushman Darby & Cushman IP Group of Pillsbury Madison & Sutro LLP
인용정보	피인용 횟수 : 47 인용 특허 : 0

초록 ▼

An image display apparatus, e.g. a head-mounted image display apparatus, which enables observation of a clear image at a wide field angle, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be readily fatigued. The image display apparatus has an image display device (6) and an ocular optical system (7). The ocular optical system (7) has a first surface (3), a second surface (4) and a third surface (5), which are disposed in the mentioned order from the observer's eyeball (1) side. The space between the first and second surfaces (3 and 4) and the space between the second and third surfaces (4 and 5) are filled with a medium having a refractive index larger than 1. The first and second surfaces (3 and 4) have different curvatures. The second surface (4) is a reflecting or semitransparent surface which is decentered with respect to an observer's visual axis (2), and which has a concave surface directed toward the observer's eyeball (1). Light rays emanating from the image display device (6) enter the observer's eyeball (1) without forming an intermediate image. The light rays are reflected once by the second surface (4) only. Thus, light rays from the image display device (6) are refracted by the third surface (5), reflected by the second surface (4), and further refracted by the first surface (3) so as to enter the observer's eyeball (1).

대표청구항 ▼

[ What we claim is:] [1.] An image display apparatus comprising:an image display device for displaying an image; andan ocular optical system constructed and arranged to project an image formed by said image display device and to lead the image into an observer's eyeball,said ocular optical system having at least three surfaces, which are defined as first, second and third surfaces in order from an observer's eyeball side, a space between said first and second surfaces and a space between said second and third surfaces being filled with a medium having refractive index larger than 1, said first and second surfaces having different curvatures, said second surface being a reflecting or semitransparent surface which is decentered with respect to an observer's visual axis and has a concave surface directed toward said observer's eyeball,wherein light rays emanating from said image display device enter said observer's eyeball without forming an intermediate image during travel to said observer's eyeball, said light rays being reflected once by said second surface only, and wherein a path of light rays from said image display device is refracted by said third surface, reflected by said second surface, and further refracted by said first surface so as to enter said observer's eyeball,any one of said first, second and third surfaces is an anamorphic surface, andthe first, second and third surfaces of said ocular optical system have positive, positive and negative refractive powers, respectively.

이 특허를 인용한 특허 (47)

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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

연합인증

Image display apparatus 원문보기

초록 ▼

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이 특허를 인용한 특허 (47)

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