Method of forming moire contour lines

Details Method of forming moire contour lines Method of forming moire contour lines

1977-01-04

1978-07-25

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250237G, 350 65, 350285, G01B 1124

Patent

active

041025776

ABSTRACT:
A light beam is periodically chopped and then converted to a plane of light by a cylindrical lens. As the plane of light is chopped, it is caused to scan an object in the direction normal to the plane of the light to form a grating pattern on the object. The image of the grating formed on the object is superposed with a standard grating to obtain a moire pattern which represents the moire contour lines of the object.

REFERENCES:
patent: 3614237 (1971-10-01), Kyle et al.
patent: 3619064 (1971-11-01), Brooks et al.

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