Image analysis – Image sensing – Optical
Reexamination Certificate
2006-05-02
2006-05-02
Do, Anh Hong (Department: 2624)
Image analysis
Image sensing
Optical
C382S312000, C382S318000, C382S322000
Reexamination Certificate
active
07039257
ABSTRACT:
At least one beam emitted from a light source is deflected by a deflector, and the beam deflected by the deflector is imaged on a surface to be scanned by imaging optical system having a diffracting surface on at least one surface thereof. Of diffracted lights diffracted by the diffracting surface when the surface to be scanned is scanned by the beam, relative to diffracted light of an order used to form a spot on the surface to be scanned, the expanse of the stray light of one of unnecessary diffracted lights of the other orders undergoing surface-reflection by a refracting surface of the imaging optical system upon incidence on the surface to be scanned is designed to be wider in the sub-scanning direction than in the main scanning direction.
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Zhou et al., “A Method for Optical Readout Using Phase Jump”, IEEE International Conference on Advanced Intelligent Mechatronics, 9-1999, pps. 950-955.
Canon Kabushiki Kaisha
Do Anh Hong
Fitzpatrick ,Cella, Harper & Scinto
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