Reflecting mirror assembly for autocollimator

Optics: measuring and testing – Range or remote distance finding – With photodetection

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Details

356138, 356153, G02B 2730

Patent

active

046502980

ABSTRACT:
A reflecting mirror assembly for an autocollimator comprises a partial reflecting mirror standing upright on a base and provided with an area for reflecting part of the rays of a light beam from the autocollimator and an area for transmitting the remaining rays of the light beam; a first reflecting mirror for deflecting the rays passing through the transmitting area substantially by 90.degree.; and a second reflecting mirror which always remains vertical irrespective of any inclination of the base and which reflects the rays reflected by the first reflecting mirror. The arrangement makes it possible to simultaneously view the pitching, yawing and rolling movements of a test object on the same screen of the autocollimator.

REFERENCES:
patent: 3480367 (1969-11-01), Husted et al.
patent: 4135823 (1979-01-01), Horvallius
patent: 4306806 (1981-12-01), Barron
patent: 4441818 (1984-04-01), Wickman
patent: 4451148 (1984-05-01), Magee

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