Interference method and interferometer for testing the surface p

Details Interference method and interferometer for testing the surface p Interference method and interferometer for testing the surface p

1985-08-06

1987-09-15

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

356360, G01B 9021

Patent

active

046936041

ABSTRACT:
An interference method of testing the surface precision of a parabolic mirror comprising the steps of dividing a beam of light rays into two beams, converting these beams into divergent spherical light waves by means of microscope object lenses, illuminating the parabolic mirror with one of the divided beams of light rays, producing a standard light from the other divided beam of light rays, and causing the reflected light from said parabolic mirror to interfere with the standard light.

REFERENCES:
Hildebrand, "A Holographic Instrument to Replace the Test Glass in Lens Testing", Optical Engineering, vol. 15, No. 1, pp. 24-28, 2/76.

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