Invention Grant
US08174750B2 Optical deflector, optical scanner, image forming apparatus, and image projector
有权
光学偏转器，光学扫描仪，图像形成装置和图像投影仪
- Patent Title: Optical deflector, optical scanner, image forming apparatus, and image projector
- Patent Title (中): 光学偏转器，光学扫描仪，图像形成装置和图像投影仪
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Application No.: US12795077Application Date: 2010-06-07
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Publication No.: US08174750B2Publication Date: 2012-05-08
- Inventor: Goichi Akanuma , Tomofumi Kitazawa , Fumiko Sakoh , Mitsumi Fujii
- Applicant: Goichi Akanuma , Tomofumi Kitazawa , Fumiko Sakoh , Mitsumi Fujii
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-137817 20090609; JP2010-100659 20100426
- Main IPC: G02B26/08
- IPC: G02B26/08
Abstract:
An optical deflector, including a fixed base; a mirror having a light reflection surface; a pair of elastic support members oscillatably supporting the mirror; and a pair of drive beams formed of a beam-shaped member on which a piezoelectric is fixed, wherein the elastic support members and the drive beams in longitudinal directions are almost orthogonally located and connected with each other, other ends of the drive beams are fixed on the fixed base, the mirror and the pair of elastic support members are cantilevered by the pair of drive beams relative to the fixed base, and bending oscillation of the drive beams causes torsional deformation of the elastic members to rotationally oscillate the mirror.
Public/Granted literature
- US20100309536A1 OPTICAL DEFLECTOR, OPTICAL SCANNER, IMAGE FORMING APPARATUS, AND IMAGE PROJECTOR Public/Granted day:2010-12-09
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