Scanning optical system for use in a laser beam printer

Details Scanning optical system for use in a laser beam printer Scanning optical system for use in a laser beam printer

1991-11-12

1993-01-05

Arnold, Bruce Y.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359212, 359711, 359771, 359793, 356400, G02B 912, G02B 904, G02B 934, G02B 2608

Patent

active

RE0341568

ABSTRACT:
An optical system particularly for a laser beam printer comprising a semiconductor laser, a collimating lens, a cylindrical lens having curvature in the sub-scanning cross section, a deflector and anamorphic scanning lens system concentrating the light on a scanning plane. The anamorphic scanning lens system may have one to four lenses but has one lens with a convex toric surface facing the scanning plane. The anamorphic scanning lens system has stronger power in the sub-scanning cross section than in the main scanning cross section.

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