Light source device for close spacing of two light beams

Details Light source device for close spacing of two light beams Light source device for close spacing of two light beams

1984-01-26

1987-01-06

Punter, William H.

Electric heating

Microwave heating

Tunnel furnace

219121LQ, 350401, 350403, G02B 2710

Patent

active

046342320

ABSTRACT:
There is disclosed a light source device in which first and second semiconductor lasers are disposed relative to a polarizing beam splitter so that the laser beam from the first is transmitted while that from the second is reflected by the beam splitter, and that the major and minor directions in the cross section of the first beam are respectively co-ordinated with those of the second beam. An optical element capable of rotating the plane of polarization of an incident beam by approximately 90.degree. is disposed between one of the semiconductor lasers and the polarizing beam splitter. In this manner the beams from the seconductor lasers can be guided, with respectively co-ordinated major and minor directions in the beam cross section, in the same direction without any decrease in the quantity of light.

REFERENCES:
patent: 2449287 (1948-09-01), Flood
patent: 2672786 (1954-03-01), Capstaff
patent: 3753608 (1973-08-01), Bernal
patent: 4380694 (1983-04-01), Dyson
Jenkins et al, "Fundamentals of Optics", McGraw Hill 1950, pp. 23-25.

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