Semiconductor light emitting device and apparatus using the same

Details Semiconductor light emitting device and apparatus using the same Semiconductor light emitting device and apparatus using the same

1989-08-01

1991-09-10

Sikes, William L.

350 34, 350 49, 350 92, G02B 636, G02B 726

Patent

active

050467980

ABSTRACT:
A collimated-beam generating device using a semiconductor laser includes a two-lens system in which light converged by a first lens is converted into a collimated beam by a second lens, whereby a distance between the semiconductor laser and the first lens is made large, assembly of the device is made easy, and a collimated beam having a small beam diameter can be produced.

REFERENCES:
patent: 4102559 (1978-07-01), Hunzinger
patent: 4307934 (1981-12-01), Palmer
patent: 4722593 (1988-02-01), Shimazaki
patent: 4744620 (1988-05-01), Ueno et al.
patent: 4749250 (1988-06-01), Carter
patent: 4790618 (1988-12-01), Abe

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