Passive beam derotator

Details Passive beam derotator Passive beam derotator

1989-12-27

1991-05-28

Arnold, Bruce Y.

Optics: measuring and testing

Range or remote distance finding

With photodetection

350539, 350484, 356138, G02B 2302, G02B 2608, G01B 1126

Patent

active

050188445

ABSTRACT:
A beam positioning system having two articulated arms with a pentaprism, or equivalent 90 degree prism, and a rotator prism, such as a Pechan prism, appropriately located in the path of a beam from a light source in combination with right angle prisms to maintain the final leg of the beam in orientation with the original orientation of the beam from the light source.

REFERENCES:
patent: 3619027 (1971-11-01), Baker
patent: 3876309 (1975-04-01), Zicaro et al.

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