Optical waveguides – With optical coupler
Patent
1997-04-23
1998-09-08
Sanghavi, Hemang
Optical waveguides
With optical coupler
385 34, 385 31, 385 50, 385 33, 372 71, G02B 626
Patent
active
058057480
ABSTRACT:
A horizontally elongated laser beam is divided into a plurality of beam sections which are arranged along the horizontal direction and vertically deflected to different degrees by a beam deflecting beam guide, and the beam sections leaving the beam deflecting beam guide at different vertical positions are horizontally deflected by a beam converging beam guide to different degrees so that the beam sections may converge along a vertical line, and the laser beam which was initially laterally elongated may be shaped into a more circular cross section which is desirable for pumping a laser system and other applications. Each of the beam guides may consist of a plurality of transparent plate members which are placed one over the other, and each beam segment is conduct through a corresponding one of the plate member along a path parallel to the major surface of the plate members. The desired amount of deflection of each beam segment can be achieved by appropriate selection of the geometry and/or the refractive property of the corresponding plate member.
REFERENCES:
patent: 4134639 (1979-01-01), Di Vita
patent: 4178066 (1979-12-01), Di Vita
patent: 4958893 (1990-09-01), Nogouchi et al.
patent: 5127068 (1992-06-01), Baer et al.
Sanghavi Hemang
Showa Optronic Co., Ltd.
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