|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||250/204 ; 250/201|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 8 인용 특허 : 4|
Apparatus for determining the direction a lens should be moved in order to provide a proper focus of a remote object on a predetermined plane. A plurality of radiation detectors are positioned to receive radiation in first and second patterns from the object and to produce signals in accordance therewith. A first group of radiation detectors, produces signals indicative of the radiation received on the first pattern while a second group of radiation detectors produces signals indicative of the radiation received, in the second pattern. The two patterns c...
Apparatus for use with an auto focus system which includes lens means that produces first and second radiation patterns of a scene, the patterns being similar and in a relative first condition when the lens means is in a proper focus position, in a relative second condition when the lens means is on a first side of the proper focus position and in a relative third condition when the lens means is on a second side of the proper focus position comprising, in combination; a first radiation detector positioned to receive radiation corresponding to a first po...