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:
Aug. 01, 2006
Filed:
Jul. 31, 2003
Tomiji Tanaka, Miyagi, JP;
Mikio Sugiki, Kanagawa, JP;
Koji Ishioka, Kanagawa, JP;
Shigeru Yamazaki, Saitama, JP;
Tomiji Tanaka, Miyagi, JP;
Mikio Sugiki, Kanagawa, JP;
Koji Ishioka, Kanagawa, JP;
Shigeru Yamazaki, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
A hologram recording apparatus, a hologram recording method and a hologram recording medium reduce noise components generated by a phase modulation type spatial light modulator, thus permitting improved integrity of data to be achieved. A light beam whose diffraction state has been controlled by a diffraction control element is condensed on a hologram recording medium. With this arrangement, a predetermined diffracted light component is removed from a diffracted light beam emergent from the diffraction control element when recording information, which is based on the diffraction state controlled by the diffraction control element, in a hologram recording medium. Thus, noise components when information is recorded can be reduced.