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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0098514 (1979-11-29) |
우선권정보 | JP-0150379 (1978-12-04) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 21 인용 특허 : 1 |
Disclosed is a focus detecting system in which first and second signals corresponding to image forming states at first and second positions each almost at the same distance before and behind a predetermined focal plane of an image forming optical system are obtained. A third signal corresponding to
An optical arrangement for receiving image forming radiation coming from an image forming optical system, said arrangement comprising in combination: (A) a beam dividing member for receiving said image forming radiation coming from said image forming optical system and for dividing the received radi
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