Laser apparatus with wander correction

Details Laser apparatus with wander correction Laser apparatus with wander correction

1995-12-08

1997-11-18

Font, Frank G.

Optics: measuring and testing

Angle measuring or angular axial alignment

Alignment of axes nominally coaxial

356123, 356131, 356375, G01J 100, G01N 2141, G01B 1114

Patent

active

056893310

ABSTRACT:
A laser apparatus includes a laser for emitting a laser beam which is reflected from a primary mirror through a primary lens in a primary optical path and focused at a primary spot. A portion of the laser beam leaks through a back face of the mirror and is directed through a reference lens and focused at a reference spot in a reference optical path. Angular wander of the laser beam on the primary mirror is corrected by measuring the lateral position of the reference spot and adjusting the primary optical path to decrease lateral wander of the primary spot.

REFERENCES:
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patent: 4770529 (1988-09-01), Levinson et al.
patent: 4831246 (1989-05-01), Wallentine et al.
patent: 5054925 (1991-10-01), Hunter
patent: 5055695 (1991-10-01), Lange
patent: 5291263 (1994-03-01), Kong
NewFocus Inc., "Motorized Multi-Axis Devices", two pages of producct literature. (no dates available).

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