|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||354/25 ; 354/31|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 6 인용 특허 : 2|
An improved focusing position detection apparatus is capable of detecting a focusing position speedily by use of a single photoelectric conversion element array. The photoelectric conversion element array is positioned so that the opposite end portions of the element array are at different distances, physically or optically, from an object and the photoelectric conversion element array is divided into three portions, the opposite end portions and an intermediate portion, and the electric output from each portion of the photoelectric conversion element is...
In a focusing position detection apparatus for focusing an image on an image formation surface with an optical focusing system having means for changing the focusing position thereof, an improvement comprising: a single photoelectric conversion element adjacent the image formation surface having three signal forming portions each with a light receiving surface disposed at a different optical distance from the optical focusing system, the effective optical distances of said respective signal forming portions increasing from one end of said photoelectric c...