Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2005-03-15
2005-03-15
Cherry, Euncha P. (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
Reexamination Certificate
active
06867891
ABSTRACT:
An optical scanning device of the present invention includes a light source for emitting a light beam, a rotatable deflector having a plurality of deflecting faces, a first group of optical devices for shaping the light beam issuing from the light source and directing the shaped light beam toward the deflector, and a second group of optical devices for focusing the light beam deflected by the deflector on a surface to be scanned. The second group of optical devices split the light beam into at least two regions and cause each split light beam to scan a particular position on the above surface within a preselected range in the main scanning direction. The optical scanning device is small size and low cost.
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Cherry Euncha P.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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