Three-dimensional volumetric sensor

Details Three-dimensional volumetric sensor Three-dimensional volumetric sensor

1985-02-04

1989-05-16

Arnold, Bruce Y.

350 63, 35016216, G02B 2610, G02B 2744

Patent

active

048304433

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 repeatability 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: 3619033 (1971-09-01), McMahon
patent: 4121882 (1978-10-01), White
patent: 4573758 (1986-03-01), Hecker et al.

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