Optical coupler with a housing permitting adjustment of the dist

Details Optical coupler with a housing permitting adjustment of the dist Optical coupler with a housing permitting adjustment of the dist

1979-06-01

1981-10-13

James, Andrew J.

357 17, 357 30, 357 81, 350 9621, H01L 2312, H01L 2302, H01L 2714

Patent

active

042951526

ABSTRACT:
In optical communication systems as well as in video disc playback equipment, it is necessary to position a light source such as a semiconductor laser at an exact distance from a lens of the optical system. In accordance with the invention this is done by mounting the laser in a tubular cover which is in a telescopic, press fit engagement with a holder provided with the lens. The desired exact distance between the laser and the lens is adjusted by relative compression between the cover and the holder. Because the engaging walls of the cover and holder are covered with a layer of indium, the walls will slide smoothly over each other during adjustment of the desired distance.

REFERENCES:
patent: 2640901 (1953-06-01), Kinman
patent: 3816847 (1974-06-01), Nagao
patent: 3946416 (1976-03-01), Hacskaylo
patent: 4119363 (1978-10-01), Camlibel et al.
patent: 4144541 (1979-03-01), Schaefer
patent: 4166668 (1979-09-01), MacLeod
patent: 4168883 (1979-09-01), MacLeod
patent: 4182545 (1980-01-01), Greer

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