Apparatus for and method of correcting for astigmatism in a ligh

Details Apparatus for and method of correcting for astigmatism in a ligh Apparatus for and method of correcting for astigmatism in a ligh

1985-11-21

1987-03-03

Henry, Jon W.

350607, G02B 510, G02B 718

Patent

active

046471642

ABSTRACT:
A technique for adjustably correcting for astigmatism in a light beam is disclosed herein. This technique utilizes first means which defines a flat, rectangular light reflecting surface having opposite reinforced side edges and which is resiliently bendable, to a limited extent, into different concave and/or convex cylindrical curvatures about a particular axis and second means acting on the first means for adjustably bending the light reflecting surface into a particular selected one of the different curvatures depending upon the astigmatism to be corrected for and for fixedly maintaining the curvature selected. In the embodiment disclosed, the light reflecting surface is adjustably bendable into the selected cylindrical curvature by application of a particular bending moment to the reinforced side edges of the light reflecting surface.

REFERENCES:
patent: 3063671 (1971-09-01), Brown
K. M. Harrison, "A Method of Radially Supporting Large Mirrors", J. Br. Astron. Assoc., (U.K. 1977,87,2), pp. 154-159.

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