Peak level detecting apparatus for image sensors which prevents saturation

摘要

A peak level detecting apparatus for image sensors by which the maximum light value of a remote object is detected effectively utilizing the dynamic range of image sensors. The peak level detecting apparatus realizes a detection of the remote object patterns without any saturation in photoelectric devices by adjusting the exposure time with the detection of induced signal change in at least one of the photoelectric devices reaching the predetermined peak level, in order to improve the dynamic range and the signal to noise ratio.