LED monitoring without external light detection

Details LED monitoring without external light detection LED monitoring without external light detection

1983-12-12

1989-01-10

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158R, G01R 3126

Patent

active

047976098

ABSTRACT:
An apparatus and method for monitoring the light intensity of individual light emitting diodes in an array of light emitting diodes. Means are provided to measure current flow through an unenergized diode adjacent to an energized diode. Current flow through the unenergized diode is porportional to light intensity of the light emitted by its energized adjacent diode.

REFERENCES:
patent: 4321707 (1982-03-01), Beasley et al.
patent: 4489447 (1984-12-01), Chik et al.
patent: 4493113 (1985-01-01), Forrest et al.

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