1978-09-27
1980-06-17
Henry, Jon W.
350 52, G02B 2302
Patent
active
042080878
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.
REFERENCES:
patent: 3378326 (1968-04-01), Alvarez
patent: 3582180 (1971-06-01), Gross
Cooper Erwin E.
McKenney Samuel R.
Bandy Alva H.
Comfort James T.
Donaldson Richard
Henry Jon W.
Texas Instruments Incorporated
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