1985-10-31
1987-12-15
Kyle, Deborah L.
350167, G02B 1700
Patent
active
047128852
ABSTRACT:
A laser diode optical system includes a laser diode having non-circular beam emitted from a diode emitter junction and having a peak energy centered on an optical axis, a collimating lens spaced from the laser diode with its focus at the laser diode on the optical axis to intercept direct energy from the laser diode and produce a central collimated beam on the optical axis, a paraboloidal reflector coaxially disposed about the laser diode emitted beam and collimating the portion of the emitted beam outside the included angle subtended by the lens, the collimated energy from the reflector being refracted through the periphery of the collimating lens to direct the collimated energy from the reflector into a hollow convergent-divergent conical beam coaxial about the central beam, a plurality of spaced energy diffusing elements on a surface of the lens intercepting and diffusing direct laser diode energy impinging the lens, and also intercepting and diffusing energy from the reflector, producing a spaced pattern of overlapping diffused beams forming a generally toroidal beam coaxially disposed about the central beam.
REFERENCES:
patent: 804996 (1905-11-01), Anthony
patent: 3022708 (1962-02-01), Baker
patent: 4185891 (1980-01-01), Kaestner
Dawson Christopher
Healey Fritz W.
Taylor Leo O.
Kyle Deborah L.
Loral Electro-Optical Systems Inc.
Wendtland Richard W.
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