Coherent light generators – Particular component circuitry – Optical pumping
Patent
1991-08-09
1992-10-20
Mintel, William
Coherent light generators
Particular component circuitry
Optical pumping
357 45, 357 16, 357 28, 357 55, 372 34, 372 50, 372 45, 346107R, 313500, 362800, H01L 3300
Patent
active
051574683
ABSTRACT:
A light emitting diode which does not readily cause an intensity of emitted light to fluctuate even when the operating temperature changes includes a substrate having thereon a light emitting layer and a reflector. The diode includes a light emitting layer which is of a composition which is adapted to generate and radiate light the intensity of which and the light emission spectrum changes of which depend on temperature. Over the light emitting layer is a reflector which is of a composition having a wavelength dependent characteristic which compensates for any such fluctuations in the light intensity and light emission spectrum of the light emitting layer. Direct light from the light emitting layer and light reflected by the reflector can be removed to the exterior of the diode to provide a light emission of uniform intensity even when the diode is subjected to changes in temperature.
REFERENCES:
patent: 4982203 (1991-01-01), Uebbing et al.
patent: 5020066 (1991-05-01), Iga et al.
patent: 5038356 (1991-08-01), Botez et al.
patent: 5051788 (1991-09-01), Tanaka
patent: 5068868 (1991-11-01), Deppe et al.
Eastman Kodak Company
Mintel William
Owens Raymond L.
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