Straight-line optical scanner using rotating holograms

Details Straight-line optical scanner using rotating holograms Straight-line optical scanner using rotating holograms

1977-04-25

1978-06-13

Stern, Ronald J.

350 61, G02B 532, G02B 2717, G03H 104

Patent

active

040945766

ABSTRACT:
A flat disk contains a number of holograms made from the interference of a plane wavefront with spherical wavefront modified by a first cylindrical lens. The disk is rotated so that a plane reconstruction wavefront sweeps across the holograms. The resulting reconstructed wavefront is passed through a second cylindrical lens, resulting in a focussed point sweeping across an object surface in one or more substantially straight lines.

REFERENCES:
patent: 3619033 (1971-11-01), McMahon
patent: 3721487 (1973-03-01), Pieuchard et al.
patent: 3795768 (1974-03-01), Locke
patent: 3922059 (1975-11-01), Noguchi
patent: 3922060 (1975-11-01), Oosaka et al.
patent: 3940202 (1976-02-01), Kato et al.
patent: 3953105 (1976-04-01), Ih
patent: 4026630 (1977-05-01), Wollenmann

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