Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1977-07-05
1978-09-26
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356141, G01J 120
Patent
active
041173198
ABSTRACT:
The system to be aligned includes a concave spherical reflector confocal with a convex mirror which is mounted together with a scraper mirror on a common support. The concave mirror is pivotally mounted for tilting about axes extending transversely to the optical axis of the cavity and it includes a spherical extension. The scraper mirror and the convex mirror are mounted for common tilting about axes extending transversely to the direction into which the laser beam is directed by the scraper mirror. Two autocollimation systems include a collimating flat on the support as well as a diverging-recollimating system thereon, the latter being optically aligned with the spherical mirror extension; both systems monitor misalignment of the axes of the mirrors, and cause corrective tilting, whereby specifically translational and rotational misalignment of the concave mirror is corrected by tilting.
REFERENCES:
patent: 3579140 (1971-05-01), Anderson et al.
patent: 3739174 (1973-06-01), Gloge
Humphries L. Lee
Nelms David C.
Rockwell International Corporation
Sperry Robert M.
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