Semiconductor laser source unit

Details Semiconductor laser source unit Semiconductor laser source unit

1989-05-11

1990-08-28

Sikes, William L.

Coherent light generators

Particular active media

Semiconductor

357 74, H01S 319

Patent

active

049531719

ABSTRACT:
A semiconductor laser source unit includes a semiconductor laser chip emitting a laser beam, a base member supporting the semiconductor laser chip, and a protection cover mounted on the base member so as to seal the semiconductor laser chip. The protection cover has a lid portion formed at an end thereof and an opening at an opposed end thereof facing the base member. The lid portion has a window. The semiconductor laser source unit also has a single aspherical lens fastened to the lid portion of the protection cover so as to cover the window formed in the lid portion. The single aspherical lens collimates the laser beam emitted from the semiconductor laser chip.

REFERENCES:
patent: 4186995 (1980-02-01), Schumacher
patent: 4295152 (1981-10-01), Khoe et al.
patent: 4307934 (1981-12-01), Palmer
patent: 4351051 (1982-09-01), van Alem et al.
patent: 4403243 (1983-09-01), Hakamada
patent: 4686678 (1987-08-01), Ohta et al.
patent: 4752109 (1988-06-01), Gordon et al.
patent: 4763334 (1988-08-01), Shimada et al.

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