Laser scanning system

Details Laser scanning system Laser scanning system

G - Physics

02

B

88/96

G02B 27/00 (2006.01) G02B 26/10 (2006.01) H04N 1/036 (2006.01) H04N 1/04 (2006.01) H04N 1/12 (2006.01) H04N 3/02 (2006.01)

Patent

CA 1178463

ABSTRACT A system for reproducing a raster scanned line of an image on a photoconductive surface of a drum comprising a monochromatic light source, a rotating holographic disk containing a plurality of diffraction gratings there- in, and an arrangement for reflecting said monochromatic light beam so as to direct the monochromatic light beam to and along a selected straight line on the photoconductive surface of the drum. The arrangement for reflecting the monochromatic light beam comprises an elliptic reflecting surface, a first mirror for reflecting the monochromatic light beam passed through the scanning disk to the elliptic reflecting surface, and a second mirror for receiving the monochromatic light beam reflected from the elliptical reflecting surface and for directing the reflected light beam onto a selected straight line on the photoconductive surface of the drum. The elliptic reflecting surface can, with little loss in accuracy, be replaced by a cylindrical surface.

396537

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