Optical deflecting device and image forming apparatus using...

Details Optical deflecting device and image forming apparatus using... Optical deflecting device and image forming apparatus using...

2007-08-24

2009-06-16

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

By moving a reflective element

C359S872000

Reexamination Certificate

active

07548362

ABSTRACT:
An optical deflecting device including a supporting member, an oscillating member, and a driving member for driving the oscillating member, wherein the oscillating member includes a first movable element and a second movable element torsionally oscillating about a common torsion axis, a first torsion spring for coupling the first movable element and the supporting member with each other, and a second torsion spring for coupling the first and second movable elements with each other and having a torsion axis the same as the first torsion spring, and wherein the first movable element is formed with a void configured to avoid blocking of incident light being incident on the second movable element from a direction intersecting with the torsion axis.

REFERENCES:
patent: 4859846 (1989-08-01), Burrer
patent: 5543956 (1996-08-01), Nakagawa et al.
patent: 7196830 (2007-03-01), Torashima et al.
patent: 2006/0152785 (2006-07-01), Yasuda et al.
patent: 2005-208578 (2005-08-01), None

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