Three-dimensional volumetric sensor

Details Three-dimensional volumetric sensor Three-dimensional volumetric sensor

1988-11-22

1991-05-28

Arnold, Bruce Y.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356376, 350 64, 350286, G02B 2610, G02B 504, G01B 1124

Patent

active

050188038

ABSTRACT:
A three-dimensional optical measurement system, where it is desired to move the light beam or plane to more than one position to increase the amount of data acquired. A rotating disk is provided with segments of lenses, zone plates or other rotationally invariant grating patterns on it. The beam or plane is passed through the segments as the disk rotates and is deflected to predetermined angles. The accurate repeatablility of this arrangement allows the use of calibration data and encoding of the light planes for ambiguity resolution to provide an accurate measurement system. Diverging beam light sources are readily accommodated. Similarly translating frames with segments of translationally invariant lenses or grating patterns may be used. Two-dimensional holographic gratings may be used to generate raster scans.

REFERENCES:
patent: 4487472 (1984-12-01), Asano
patent: 4494874 (1985-01-01), DiMatteo et al.
patent: 4573758 (1986-03-01), Hecker et al.
patent: 4593967 (1986-06-01), Haugen
patent: 4758093 (1988-07-01), Stern et al.
patent: 4830443 (1989-05-01), Hecker et al.

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