Holographic scanner spinner

Details Holographic scanner spinner Holographic scanner spinner

1988-05-31

1989-06-20

Arnold, Bruce Y.

350 62, G02B 532, G02B 2610

Patent

active

048404438

ABSTRACT:
A multi-facet holographic scanner spinner is described in which each facet has a sector shape, it being bounded by radial lines and, usually, the periphery of the holographic scanner spinner. Each facet includes a diffraction grating pattern. The pattern in each facet extends to the radial lines bounding the facet in regions between a first and a second, greater radial distance from the axis of the holographic scanner spinner, but is spaced from the radial lines in regions radially outwardly of the second radial distance. Thus, the width of each facet is no greater than is necessary to perform its function and is less than a prior art facet performing the same function.

REFERENCES:
patent: 4787688 (1988-11-01), Rumfola

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