Optical alignment for a multi-mirror telescope

Details Optical alignment for a multi-mirror telescope Optical alignment for a multi-mirror telescope

2006-07-18

2006-07-18

Toetley, Gregory J. (Department: 2877)

Optics: measuring and testing

By light interference

For dimensional measurement

C356S152300, C356S152200

Reexamination Certificate

active

07079259

ABSTRACT:
A primary mirror22defines an active concave surface24, a first planar40and a first concave42alignment surfaces, each facing an active surface30defined by a secondary mirror28. The secondary mirror also defines a second planar46a second concave48alignment surfaces, each opposite the active surface30. Alignment beams64, 66, 68, 70are reflected from each of the four alignment surfaces, which all face the same direction, to adjust the mirrors. The first planar alignment surface is used to adjust tip and tilt of the primary mirror; the first concave alignment surface is used to position a retro reflector50relative to the primary mirror; the second planar alignment surface is used to adjust tip and tilt of the second mirror, and the second concave alignment surface is used to adjust the second mirror in the x, y and z direction relative to the first mirror. The apparatus and method are described for two and three mirror telescopes.

REFERENCES:
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patent: 6402329 (2002-06-01), Bailly et al.
patent: 6570715 (2003-05-01), Chen et al.

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