Optical device, optical scanner, and image forming apparatus

Details Optical device, optical scanner, and image forming apparatus Optical device, optical scanner, and image forming apparatus

2011-03-15

2011-03-15

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

Reexamination Certificate

active

07907317

ABSTRACT:
An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having a light reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a ferromagnetic member provided to the movable plate; and a drive section configured to generate electromagnetic force between the drive section and the ferromagnetic member to thereby swing the movable plate, wherein a portion of the drive section, included in the distribution range of the light, is formed of a surface having a normal vector with which the light is reflected to outside of a predetermined range.

REFERENCES:
patent: 6937121 (2005-08-01), Norimatsu
patent: 2009/0073526 (2009-03-01), Uchikawa
patent: 06-82711 (1994-03-01), None
patent: 2009-69457 (2009-04-01), None

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