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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||250/201 ; 250/204 ; 354/406|
|우선권정보||JP-0002622 (1983-01-10); JP-0113936 (1983-06-23)|
|발명자 / 주소||
|출원인 / 주소||
|인용정보||피인용 횟수 : 81 인용 특허 : 9|
A focus detecting device is provided with first and second line sensors and first and second image forming lenses which are located behind a predetermined focal plane of the objective lens to receive the object lights for forming first and second images on the first and second line sensors, respectively. The image signal generated by the first line sensor is divided into a plurality of block signals each consisting of a predetermined number of picture element outputs and each block signal is compared with groups of picture element outputs of the second l...
A focus detecting device for a camera having an objective lens with an optical axis, comprising: optical means for receiving light from an object which has passed through said objective lens at two portions of said objective lens distant from the optical axis of said objective lens, to form first and second object images in such a manner that the distance between said first and second object images in a direction perpendicular to said optical axis varies with the focus condition of an object image formed by said objective lens on its predetermined focal ...