Straight-line optical scanner using rotating holograms

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

G - Physics

02

B

88/0.1, 88/96.2

G02B 5/32 (2006.01) G02B 26/10 (2006.01) G06K 7/10 (2006.01)

Patent

CA 1075052

STRAIGHT-LINE OPTICAL SCANNER USING ROTATING HOLOGRAMS 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 plane in one or more straight lines.

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