Patent
1987-02-06
1988-07-12
Corbin, John K.
350 68, 350434, 350469, 350474, 350479, G02B 912, G02B 904, G02B 934, G02B 2608
Patent
active
047565837
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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Asahi Kogaku Kogyo Kabushiki Kaisha
Corbin John K.
Ryan Jay
LandOfFree
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