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. 05, 2008
Filed:
Jul. 07, 2004
Hideyoshi Horimai, Yokohama, JP;
Hideyoshi Horimai, Yokohama, JP;
Optware Corporation, Kanagawa, JP;
Abstract
It is an object of the invention to record and reproduce information successfully even when light having small energy is used for hologram. A drive means to move a collimator lens according to movement of a recording medium is provided, and an angle of light for recording which enters from the collimator lens to a polarizing beam splitter is changed. In result, a position of light which enters the recording medium is shifted, and therefore, information can be recorded in a normal position of the recording medium, and information can be reproduced from the normal position on the recording medium according to movement of the recording medium.