Temperature compensated light-generating device

Details Temperature compensated light-generating device Temperature compensated light-generating device

1983-12-27

1986-08-19

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, 250231R, 313499, G01D 526, G02B 520, H01J 300

Patent

active

046071580

ABSTRACT:
A light-generating element, for example an LED, a semiconductor laser or a body of photoluminescent material is arranged to have a temperature-independent output power characteristic by providing it with an optical filter having such a frequency-dependent transmission curve that the amplitude of the signal, emitted by the element, is, after passage through the filter, substantially independent of the temperature of the element.

REFERENCES:
patent: 4408123 (1983-10-01), Sichling et al.
patent: 4409476 (1983-10-01), Lofgren et al.
patent: 4529875 (1985-07-01), Brogardh et al.

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