Range finding by diffraction

Details Range finding by diffraction Range finding by diffraction

1985-12-04

1987-07-07

Willis, Davis L.

Optics: measuring and testing

Optical pyrometers

Plural color responsive

356355, 356356, G01C 300, G01B 1102

Patent

active

046783245

ABSTRACT:
A method for determining range by correlating the relationship between the distance of a diffraction grating from a monochromatically illuminated target surface with the respective relative displacements of higher order diffraction images from the position of the zero order image as observed through the diffraction grating. An apparatus suggested for embodying the aforesaid method.

REFERENCES:
patent: 3199400 (1965-08-01), Zabinski
"Position Monitoring Technique Using Double Diffraction Phenomenon", Patorski, Optics Communications, 12-1978, pp. 303-306.

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