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:
Nov. 19, 2013
Filed:
Aug. 22, 2007
Seiji Nishiwaki, Hyogo, JP;
Kazuo Momoo, Osaka, JP;
Seiji Nishiwaki, Hyogo, JP;
Kazuo Momoo, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An information recording/reproducing device includes a radiation light sourcesuch as a semiconductor laser, a spatial modulation elementthat splits laser lightemitted from the radiation light sourceinto a large number of diffracted light rays, and an objective lensthat converges the large number of diffracted light rays onto different points. The laser lightemitted from the radiation light sourceis split into a large number of diffracted light rays by the spatial modulation element, the large number of diffracted light rays are converged onto different points in the photosensitive layerof the information recording mediumby the objective lens, and information is recorded in the photosensitive layerof the information recording medium, using an assembly of these converging points. Accordingly, it is possible to provide an information recording device capable of realizing high-contrast recording in which stray light or diffraction has no influence during signal recording.