Semiconductor laser device

Details Semiconductor laser device Semiconductor laser device

1992-03-13

1993-06-15

Epps, Georgia Y.

Coherent light generators

Particular beam control device

Producing plural wavelength output

372102, 372 50, 372 97, 372 44, H01S 310

Patent

active

052205711

ABSTRACT:
A semiconductor laser device comprising a semiconductor laser chip emitting infrared laser beams in a predetermined direction and a visible light source emitting visible light beams in the same direction. The semiconductor laser chip and the visible light source are disposed close to each other on a package stem. An optical element is disposed in a direction where both light beams are emitted so as to collimate or converge the visible light beams while allowing the infrared laser beams to pass therethrough without change. By this configuration, the operator can visually locate the infrared laser beams by knowing the location of the visible light beams.

REFERENCES:
patent: 4832469 (1989-05-01), Noguchi et al.
patent: 4901325 (1990-02-01), Kato et al.
patent: 5022035 (1991-06-01), Hasegawa
patent: 5081637 (1992-01-01), Fan et al.

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