Photographic system photoelectric transducer - uses integrated circuits for automatic exposure control of camera according to ambient light

摘要

The photographic system photoelectric transducer has an opaque housing with a window formed in one of its sides. One or several mutually insulated photoelectric transducer elements are arranged in the housing so as to receive light entering through the window. A circuit processes the output or outputs of the transducer (13) or transducers. This circuit produces an output signal which represents the degree of cleanness of an image of an object or the luminosity of the object. The circuit is an integrated circuit and is positioned in the housing in a sealed and screened fashion. When the number of transducer elements is not equal to one the circuit has a sequential signal system. This sequential signal system receives the outputs of the photoelectric transducers to produce a succession of outputs in time relationship.