Monolithic devices formed with an array of light emitting diodes

Details Monolithic devices formed with an array of light emitting diodes Monolithic devices formed with an array of light emitting diodes

1983-11-18

1986-05-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250551, G01J 132

Patent

active

045888833

ABSTRACT:
An array of light emitting diodes are fabricated in the substrate of a monolithic device. Each diode, when forward biased, produces output light which is emitted from the device and subsurface light which is transmitted through the substrate. A single detector is fabricated in the substrate and detects subsurface light from any forward biased light emitting diode of such array. In response to such subsurface light, the detector produces a signal which is representative of the intensity of output light emitted from the device by such forward biased light emitting diode.

REFERENCES:
patent: 3480783 (1969-11-01), Mankarious
patent: 4074143 (1978-02-01), Rokos
patent: 4074320 (1978-02-01), Kapes, Jr.
patent: 4097732 (1978-06-01), Krause et al.
patent: 4284884 (1981-08-01), Dyment et al.
patent: 4297653 (1981-10-01), Scifres et al.
patent: 4521681 (1985-06-01), Inaba et al.

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