Device for sensing light and providing electrical readout

Details Device for sensing light and providing electrical readout Device for sensing light and providing electrical readout

1984-11-01

1987-06-09

Wan, Gene

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250214B, G01J 120

Patent

active

046721894

ABSTRACT:
The disclosed device responds to pulsed light from a light source to produce electrical signals. A photo-electric transducer element uses a number of signal storage sites on which successive signals from the photo-electric transducer element are accumulated. A signal flow circuit transfers the stored signals from one of the signal storage sites to another in synchronism with the energization and de-energization of the light source. Simultaneously, those signals produced when the light source is energized are accumulated on a common storage site. The other signals produced when the light source is not energized are accumulated on another common storage site. When performing a computation on the basis of an electrical readout of one set of stored signals and another electrical readout of another set of stored signals, the different characteristics of the different storage site prevent inaccurate results.

REFERENCES:
patent: 4522492 (1985-06-01), Masunaga

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