Photosensor device including means for designating a plurality o

Details Photosensor device including means for designating a plurality o Photosensor device including means for designating a plurality o

1995-05-02

1996-01-16

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

2502018, H01J 4014

Patent

active

054850045

ABSTRACT:
A photoelectric sensor device has a two-dimensional arrangement of a multiplicity of unit structures each including a pixel. The sensor device includes a circuit for simultaneously designating a plurality of pixel blocks of any desired sizes at any desired positions on the two dimensional arrangement of unit structures, each pixel block being composed of pixels which are to be actually used. The sensor device also includes a monitor output circuit for outputting, for each of the pixel blocks, at least one monitor output as the representative of the amounts of charges accumulated in the pixels in each of the pixel blocks. The sensor device further includes a circuit which executes the control of accumulation of charges and the control of outputting of the image signals on each of the pixel blocks independently of other pixel blocks. Disclosed also is a focus detection system using the sensor device.

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