Photoelectric measuring device

Details Photoelectric measuring device Photoelectric measuring device

1976-08-24

1977-09-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

357 30, H01J 3912

Patent

active

040499634

ABSTRACT:
A transparent photocell formed of two thin film layers of a semi-conductor material and an intervening thin film layer of a photoconductor material, a constant voltage being applied across the semi-conductor layers and the current through the cell being detected as a measure of the intensity of light incident on the cell. The thin film nature of the cell enables it to be combined with a lens of an optical system as a plurality of laminae coated onto a surface of said lens.

REFERENCES:
patent: 3556787 (1971-01-01), Letter
patent: 3693013 (1972-09-01), Dueker
patent: 3739174 (1973-06-01), Gloge

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