Optical interferometer

Details Optical interferometer Optical interferometer

1976-07-02

1978-05-16

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356113, 356124, G01B 902

Patent

active

040896072

ABSTRACT:
An optical interferometer for use in observing the optical quality of a relatively large area of a mirror of any shape is disclosed. The disclosed interferometer comprises an arrangement for splitting a beam from a light source into two beams and focusing the two beams on appropriately shaped slits to derive two coherent sources and then directing the light from such sources through conjugate paths (one of which includes a mirror whose surface is to be checked) to a viewing screen. The interference pattern observed on such screen then is determined by the optical quality of the illuminated portion of the mirror being checked.

REFERENCES:
patent: 3740150 (1973-06-01), Munnerlyn
MacGovern et al., "Computer Generated Holograms for Testing Optical Elements," Applied Optics, vol. 10, No. 3, pp. 619-624, 3/71.

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