Easy to align interferometric reference reflectors

Details Easy to align interferometric reference reflectors Easy to align interferometric reference reflectors

1996-04-25

1997-11-04

Font, Frank G.

Optics: measuring and testing

By polarized light examination

With birefringent element

356345, 356400, G01B 902

Patent

active

056845936

ABSTRACT:
A reference reflector alignment aid (26) is provided including an alignment indicator (28). The alignment aid (26) is secured to a reference reflector (30) such that the alignment indicator (28) is located essentially at the optical center of curvature (32) of the reference reflector (30). The alignment aid (26) and reference reflector (30) are movable as a unit to position the optical center of curvature (32) coincident to the focal point (24) of an element or optical system to be tested (20).

REFERENCES:
patent: 4085329 (1978-04-01), McCoy et al.
patent: 5467193 (1995-11-01), Laewen et al.
patent: 5563706 (1996-10-01), Shibuya et al.

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