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:
Jan. 19, 2010
Filed:
Jun. 07, 2006
San-woei Shyu, Taipei, TW;
Ming-hua Wen, Taipei, TW;
Guo-zen Chen, Taipei, TW;
I-lin Chu, Taipei, TW;
He-pin Wong, Taipei, TW;
San-Woei Shyu, Taipei, TW;
Ming-Hua Wen, Taipei, TW;
Guo-Zen Chen, Taipei, TW;
I-Lin Chu, Taipei, TW;
He-Pin Wong, Taipei, TW;
E-Pin Optical Industry Co., Ltd., Taipei, TW;
Abstract
An in-line laser scanning unit (LSU) with multiple light beams is disclosed. The LSU includes a minimized in-line mirror set composed by a plurality of vertically stacked Micro Electronic Mechanical System (MEMS) oscillatory mirrors and a linear corresponding scanning lens set formed by a plurality of F-Sin θ lens stacked vertically so as to correct the variation of reflective angle of the oscillatory mirror that is sinusoidal in time. Thus the scanning speed of multiple laser beams on the image plane is constant. Therefore, the volume of color printers is effectively reduced and the scanning efficiency is improved when the LSU in accordance with the present invention is applied to the optical engines of color printers.