[특허]Object distance measuring system for an optical instrument

[미국특허] Object distance measuring system for an optical instrument 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01C-003/08 G03B-013/20
출원번호	US-0515927 (1974-10-18)
우선권정보	JA-0120555 (1973-10-26)
발명자 / 주소	Aizawa Hiroshi (Machida JA) Hosoe Kazuya (Machida JA) Matsumoto Seiichi (Yokohama JA) Yokota Hideo (Tokyo JA)
출원인 / 주소	Canon Kabushiki Kaisha (Tokyo JA 03)
인용정보	피인용 횟수 : 17 인용 특허 : 0

초록 ▼

A method and an apparatus is disclosed for detecting the sharpness of the object image suited for optical instruments such as a camera and for adjusting the focus of the optics by means of photoelectric means presenting a non-linear resistance-illumination characteristics such as CdS or CdSe. Such an object image may be formed by means of the optics on the above mentioned photoelectric means presenting the electrodes at both ends along the longer side of a photoelectric semiconductor whose longer side is extremely long as compared with the shorter side as well as on the above mentioned photoelectric means presenting the electrodes at both ends along the shorter side of the photoelectric semiconductor. An object distance measuring system which digitally displays the distance between camera and photographing object when an automatic focusing operation is carried out is also disclosed.

대표청구항 ▼

An object distance measuring system comprising: A. an image forming optical system capable of forming an image of an object, the optical system having an optical axis and being arranged to be shiftable along the axis from a predetermined first position on the axis to a second position in which the image of the object is placed on a destined image forming plane; B. driving means for driving said optical system from said first position toward said second position, the driving means being operatively connected to said optical system; C. detecting means for detecting the positional variation of said optical system on the optical axis, said detecting means being responsive to the positional variation of the optical system and producing a signal for stopping the optical system when the optical system reaches the second position, said driving means being electrically connected to said detecting means and stopping the shifting of said optical system in response to said signal produced by said detecting means; D. converting means for converting a shifting distance of said optical system in moving from the first position to the second position, into a digital signal, the converting means producing a digital signal corresponding to the shifting distance of the optical system from the first position in relation to the shifting of the optical system; and E. displaying means for digitally displaying the object distance said displaying means responsive to the digital output signal of said converting means to digitally display said object distance based on the digital signal which is produced by the converting means and which corresponds to the shifting distance of the optical system.

이 특허를 인용한 특허 (17) 인용/피인용 타임라인 분석

Aoki Harumi (Saitama JPX) Kawasaki Masahiro (Saitama JPX) Suzuki Koji (Asaka JPX), Automatic focus detecting device for camera.
상세보기
Suzuki, Ryoichi; Tokuda, Ryuji, Automatic focusing device.
상세보기
Kitai Kiyoshi (Yotsukaido JPX) Onda Eiichi (Yotsukaido JPX) Yonemoto Tomoo (Yotsukaido JPX) Nagaoka Shinji (Yotsukaido JPX), Automatic focusing device for camera.
상세보기
Ito Kazumi (Mitaka JPX), Camera.
상세보기
Bruder, Ingmar; Spiller, Simone Christina; Thiel, Erwin; Irle, Stephan; Send, Robert; Wonneberger, Henrike, Detector comprising a transversal optical sensor for detecting a transversal position of a light beam from an object and a longitudinal optical sensor sensing a beam cross-section of the light beam in a sensor region.
상세보기
Send, Robert; Bruder, Ingmar; Irle, Stephan; Thiel, Erwin, Detector for determining a longitudinal coordinate of an object via an intensity distribution of illuminated pixels.
상세보기
Send, Robert; Bruder, Ingmar; Thiel, Erwin; Irle, Stephan, Detector for determining a position of at least one object.
상세보기
Send, Robert; Bruder, Ingmar; Thiel, Erwin; Irle, Stephan, Detector for determining a position of at least one object.
상세보기
Bruder, Ingmar; Thiel, Erwin; Irle, Stephan; Send, Robert, Detector for optically detecting at least one longitudinal coordinate of one object by determining a number of illuminated pixels.
상세보기
Send, Robert; Bruder, Ingmar; Irle, Stephan; Thiel, Erwin, Detector for optically determining a position of at least one object.
상세보기
Bruder, Ingmar; Spiller, Simone Christina; Thiel, Erwin; Irle, Stephan; Send, Robert; Wonneberger, Henrike, Detector having a transversal optical sensor and a longitudinal optical sensor.
상세보기
Murphy Michael ; Woo Arthur N. ; Nichols Mark ; Schipper John, Geographical position/image digital recording and display system.
상세보기
Schipper John F. ; Pelley Allan M., Image authentication patterning.
상세보기
Send, Robert; Bruder, Ingmar; Irle, Stephan; Thiel, Erwin; Wonneberger, Henrike, Optical detector.
상세보기
Send, Robert; Bruder, Ingmar; Irle, Stephan; Thiel, Erwin; Wonneberger, Henrike, Optical detector.
상세보기
Bruder, Ingmar; Send, Robert; Irle, Stephan; Thiel, Erwin, Optical detector and method for manufacturing the same.
상세보기
Hell August (Feldkirchen DEX) Cocron Istvan (Munich DEX), Unidirectional focussing system.
상세보기

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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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[미국특허] Object distance measuring system for an optical instrument 원문보기