Apparatus for and method of correcting for astigmatism in a light beam reflected off of a light reflecting surface

Patent · Thu Jan 01 00:00:00 EST 1987

OSTI ID:866158

Sawicki, Richard H ^[1]; Sweatt, William ^[2]

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1. Pleasanton, CA
2. Livermore, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4647164
• OSTI ID: 866158
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
method
correcting
astigmatism
light
beam
reflected
reflecting
surface
technique
adjustably
disclosed
utilizes
means
defines
flat
rectangular
opposite
reinforced
edges
resiliently
bendable
limited
extent
concave
convex
cylindrical
curvatures
particular
axis
acting
bending
selected
depending
corrected
fixedly
maintaining
curvature
embodiment
application
moment
means acting
beam reflected
light beam
reflecting surface
light reflecting
technique utilizes
limited extent
adjustably correcting
/359/