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:
Feb. 20, 2001
Filed:
Mar. 16, 1998
Makoto Kamioka, Kasuga, JP;
Matsushita Electric Industrial Co., LTD, Osaka, JP;
Abstract
A multiple light beam scanning optical system includes a plurality of light sources, driving circuits, collimator lenses, cylindrical lenses for focusing light beams emitted from the collimator lens in sub-scanning directions, a beam splitter, and a deflector. The deflector has a deflection surface disposed near a point at which a light beam emitted from the beam splitter is focused by the cylindrical lens. A scanning lens, a synchronizing detector, and a sensor unit enable detection of position information of sub-scanning directions of the plurality of light beams. A control circuit drives and controls a cylindrical lens by processing an output signal from the sensor unit, and a light path correction mechanism moves a cylindrical lens on the basis of a control signal from the control circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile