Holographic scanner utilizing auxiliary reflective surface

Details Holographic scanner utilizing auxiliary reflective surface Holographic scanner utilizing auxiliary reflective surface

1974-10-16

1976-04-27

Stern, Ronald J.

350 35, 350162ZP, G02B 2717, G03H 104

Patent

active

039531058

ABSTRACT:
An apparatus which includes an optical spinner having a surface rotatable about an axis that is substantially perpendicular to the surface at its point of intersection with the axis. A source of coherent radiation is directed toward the surface and a zone-type lens covering at least a portion of the surface is configured to receive the radiation and direct it toward a first scanning focal point locus. An auxiliary reflective means is disposed in the path of the directed radiation, the reflective means being shaped to redirect the radiation toward a second scanning focal point locus, such that the principal ray of the radiation is substantially perpendicular to the axis. In this manner, the problems generally encountered with non-normal impinging light bundles are overcome.

REFERENCES:
patent: 3614193 (1971-10-01), Beiser
patent: 3619033 (1971-11-01), McMahon
patent: 3707723 (1972-12-01), Levene
patent: 3721487 (1973-03-01), Pieuchard et al.
patent: 3795768 (1974-03-01), Locke

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