The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2009
Filed:
Aug. 27, 2007
Hiroki Yoshida, Utsunomiya, JP;
Yoshihiro Ishibe, Utsunomiya, JP;
Hiroki Yoshida, Utsunomiya, JP;
Yoshihiro Ishibe, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical scanning device having a deflector with an oscillating element wherein a relation 0.85<(dY/dθ)/(dY/dθ)<1.15 is satisfied throughout an effective scan region, where θis a deflection angle of the oscillating element as a light beam scans the center position Yof an effective scan region on a scan surface with respect to a main-scan direction, θ is the deflection angle of the oscillating element as the light beam scans a scan position Y in the effective scan region with respect to the main-scan direction, dYis an amount of change at the center position Yon the scan surface with reference to an amount of change dθof the oscillating element at the deflection angle θ, and dY is an amount of change at the scan position Y on the scan surface with reference to an amount of change dθ of the oscillating element at the deflection angle θ.