Process to adjust output of light emitters

Details Process to adjust output of light emitters Process to adjust output of light emitters

1991-04-05

1992-08-11

Hearn, Brian E.

Fishing, trapping, and vermin destroying

437127, 437173, 437905, 148DIG99, 148DIG93, H01L 2120, H01L 21268

Patent

active

051378442

ABSTRACT:
The electromagnetic radiation output from a solid-state radiation emitter is adjusted by covering at least part of the emission surface with an absorber material which absorbs the radiation emitted from the emitter, and directing a beam of radiation from outside the radiation emitter on to the absorber material so as to ablate at least part of the absorber material from the emission surface, or render at least part of the absorber material transmissive of the electromagnetic radiation from the emitter. The process is especially useful for equalizing the outputs from an array of emitters, such as a bar of light emitting diodes.

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patent: 4983546 (1991-01-01), Hyun et al.

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