Optical system capable of continuously varying the diameter of a

Details Optical system capable of continuously varying the diameter of a Optical system capable of continuously varying the diameter of a

1980-11-18

1982-10-12

Corbin, John K.

350427, G02B 2717, G02B 1516

Patent

active

043536174

ABSTRACT:
An optical system having a light source portion, a light receiving medium receiving the light beam from the light source portion, and a light condensing optical system for condensing the light beam from the light source portion as a beam spot on the light receiving medium, the light condensing optical system having provided therein an area in which the light beam becomes a parallel beam, said area having disposed therein an afocal zoom lens, whereby the diameter of the beam spot can be continuously varied.

REFERENCES:
patent: 3259013 (1966-07-01), Back
patent: 3790255 (1974-02-01), Shoemaker
patent: 4128297 (1978-12-01), Bourne
patent: 4253724 (1981-03-01), Minoura et al.

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