Optical beam scanning device, image forming apparatus,...

Details Optical beam scanning device, image forming apparatus,... Optical beam scanning device, image forming apparatus,...

2011-03-22

2011-03-22

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

Reexamination Certificate

active

07911667

ABSTRACT:
A technique is provided which can realize scanning by a light flux having a desired optical characteristic in a light beam scanning device adopting a multi-beam optical system. There are provided a pre-deflection optical system that shapes divergent light beams from plural light sources into a light flux having a cross-sectional shape long in a specified direction, and a rotary deflector that deflects the light flux shaped by the pre-deflection optical system and scans it in the specified direction, and the pre-deflection optical system includes a first optical system that weakens a degree of divergence of the divergent light beams from the plural light sources or converts them into parallel light beams or converging light beams, a second optical system including at least one lens having a negative power in a rotation axis direction of the rotary deflector, and a third optical system having a positive power in the rotation axis direction of the rotary deflector.

REFERENCES:
patent: 6717704 (2004-04-01), Nakai
patent: 6839076 (2005-01-01), Yamaguchi
patent: 6888655 (2005-05-01), Yamaguchi
patent: 6980342 (2005-12-01), Yamaguchi
patent: 2003/0020801 (2003-01-01), Yamaguchi
patent: 2002-328323 (2002-11-01), None
patent: 2005-024958 (2005-01-01), None
patent: 2005-049506 (2005-02-01), None
patent: 2005-049509 (2005-02-01), None
patent: 2005-062399 (2005-03-01), None
Beiser, Laser Scanning Notebook, LSN-8-11/91, The Polygon Scanner, 1992.
Beiser, Laser Scanning Notebook, Spie Optical Engineering Press, The Polygon Scanner, LSN-8-11/91.

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