|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||250/204 ; 250/201|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 2 인용 특허 : 1|
A focus detecting device for a camera utilizing a self-scanning type photoelectric element array composed of a plurality of minute photoelectric elements. The input signal from the photoelectric element array is held by first and second memory circuits at opposite phases from one another with the holding time for the memory circuit corresponding to twice the scanning time for a single minute photoelectric element within the array. Signals representing the difference and sum of the output of the memory circuits are formed and the absolute value of the dif...
An automatic focus detecting device for a camera comprising: a self-scanning type photoelectric element array having a plurality of microphotoelectric elements, said self-scanning type photoelectric element being disposed at a position equivalent to the image forming plane of a lens; a first memory circuit for holding an output signal from said self-scanning type photoelectric element corresponding to a minute photoelectric element for a first predetermined period of time; a second memory circuit for holding an output signal from said self-scanning type ...