Optic element testing method and apparatus

Details Optic element testing method and apparatus Optic element testing method and apparatus

1986-02-25

1988-02-16

Willis, Davis L.

Optics: measuring and testing

By polarized light examination

With birefringent element

350607, G01B 902

Patent

active

047251441

ABSTRACT:
A system is described for testing aspheric optic elements by the interference of light beam components that are respectively directed to the element to be tested and to a reference element, which facilitates the testing. A reference element is deformable in a controlled manner to more closely match the element to be tested, to produce straighter and more even fringes.

REFERENCES:
patent: 3797938 (1974-03-01), Heflinger
patent: 3904274 (1975-09-01), Feinleib
patent: 3977789 (1976-08-01), Hunter
patent: 4236821 (1980-12-01), Meyer-Arendt
patent: 4236824 (1980-12-01), Anderson
patent: 4387966 (1983-06-01), Holly
patent: 4477720 (1984-10-01), Pearson
Henderson et al., "System Performance of a Large Deformable Mirror Using Differential Ball Screw Actuators", Proc. Soc. of Photo-Optical Instrum. Engrs., vol. 179, pp. 51-60, 1979.

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