Photodetector arrangements and circuits

Details Photodetector arrangements and circuits Photodetector arrangements and circuits

1978-05-19

1980-09-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313 94, H01J 3912

Patent

active

042232155

ABSTRACT:
An improved photodetector arrangement comprises positioning a photodetector having at least one semi-transparent cathode so that the light beam striking the cathode passes through it at least twice before exiting from the photodetector. In another embodiment of the invention, a second photodetector is positioned relative to a first photodetector so that the light beam, after striking the first photodetector, strikes the second photodetector. Where the two photodetectors are employed, they may be electrically connected in parallel.

REFERENCES:
patent: 3218196 (1965-11-01), Jensen et al.
patent: 4070112 (1978-01-01), Tsunazawa et al.

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