Optical flexure joint
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United States of America Patent
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-
Jun 17, 1980
Grant Date -
N/A
app pub date -
Sep 27, 1978
filing date -
Sep 27, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical flexure joint comprises first and second gimbal mounted lens doublets. The first doublet has a positive surface and the second a negative surface. Each lens doublet consists of two common glasses having index of refractions between about 1.4 and 1.9 that produce the same power as if they were a single lens having an index of refraction of 2.0. The first and second doublets when mounted with the positive and negative surfaces mating and the first doublet rotated with respect to the second form a wedge which has an optical deviation equal to the wedge angle; thus the optical flexure joint allows a small rotary motion to occur in an optical system perpendicular to the optical axis without any perceptable image motion.
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