Optics: measuring and testing – Lens or reflective image former testing – For optical transfer function
Patent
1990-02-27
1991-06-04
Evans, F. L.
Optics: measuring and testing
Lens or reflective image former testing
For optical transfer function
G01B 900
Patent
active
050209051
ABSTRACT:
The Foucault knife-edge test has been traditionally employed for testing a monolithic imaging device, for example, a mirror, to ascertain its characteristics, for example, whether or not it is a source of optical aberrations. The present invention, in contrast to the traditional Foucault employment, discloses a Foucault testing of a segmented optic, thereby significantly extending the utility of the Foucault test.
REFERENCES:
patent: 4272190 (1981-06-01), Shapiro
Dey Thomas W.
Granger Edward M.
Humbel William D.
Pitek John G.
Vandenberg Donald E.
Eastman Kodak Company
Evans F. L.
Kaufman Stephen C.
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