Baffle for attenuating off-axis light emissions

Details Baffle for attenuating off-axis light emissions Baffle for attenuating off-axis light emissions

1991-03-08

1992-03-03

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372 98, 372108, 359614, H01S 308

Patent

active

050938371

ABSTRACT:
A scatter shield attenuates off-axis illumination emanating from a light beam projector. The scatter shield comprises an elongate housing, usually cylindrical, having at least two baffles therein. The dimensions of the scatter shield are selected to assure that off-axis illumination exceeding a preselected angle of divergence is internally reflected within the shield at least three times. Such multiple reflections provide for highly efficient attenuation.

REFERENCES:
patent: 3699471 (1972-10-01), Mulready et al.
patent: 4217026 (1980-08-01), Raddvich
patent: 4820923 (1989-04-01), Wellman

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