Optical scanner using planar reflecting holograms

Details Optical scanner using planar reflecting holograms Optical scanner using planar reflecting holograms

G - Physics

06

K

352/53.74

G06K 9/76 (2006.01) G06K 7/10 (2006.01)

Patent

CA 2005862

An optical scanner suitable for use with a bar code reader is disclosed. The optical scanner comprises a light source for generating a laser beam, a laser beam scanning device, a scanning pattern generating optical system, and a signal light condensing optical system for deflecting scattered signal light scattered by an object to be read to introduce the light to a photo-detector. The invention realizes miniaturization of the apparatus by employing at least one hologram of the reflection type for the scanning pattern generating optical system or the signal light condensing optical system.

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