Device and method for testing high reflectivity autostigmatic op

Details Device and method for testing high reflectivity autostigmatic op Device and method for testing high reflectivity autostigmatic op

1975-05-12

1976-12-21

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356106R, G01B 902

Patent

active

039985539

ABSTRACT:
An optical device and method for testing high reflectivity autostigmatic optical elements and systems is disclosed. A thin, partially transmissive optical element, e.g., a pellicle with an optical coating having a transmission factor determined by the nominal reflectivity of the test article, is placed in the measurement leg of a spherical wavefront Fizeau interferometer so that high contrast, two-beam interference fringes can be obtained from a high reflectivity autostigmatic optical element or system.

REFERENCES:
patent: 3028782 (1962-04-01), Bernhardt et al.
patent: 3506361 (1970-04-01), Erickson
Heintze et al; "A Multiple Beam Interferometer for use with Spherical Wavefronts"; Applied Optics; vol. 6, No. 11, Nov. 1967 p. 1924.
Houston; Optical Engineering; vol. 13, No. 2, p. G55; Mar.-Apr. 1974.

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