Optical apparatus including two afocal systems

Details Optical apparatus including two afocal systems Optical apparatus including two afocal systems

1983-11-28

1986-11-11

Corbin, John K.

350453, G02B 2608

Patent

active

046218904

ABSTRACT:
An optical apparatus for imaging light from a laser device into a spot shape includes an objective lens for converting parallel rays into a spot-like light, the pupil plane of the objective lens being located at a position conjugate with the emitting plane of the laser device so that the amount of light at the spot will less be changed under variations of emitting angle in the laser device.

REFERENCES:
patent: 3771850 (1973-11-01), Casler
patent: 4062623 (1977-12-01), Suzuki et al.
patent: 4199217 (1980-04-01), Rogers
patent: 4346990 (1982-08-01), Rhodes
patent: 4427268 (1984-01-01), Ikemori

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