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. 15, 2008
Filed:
Dec. 08, 2004
Kazuhiro Hayashi, Ashigarakami-gun, JP;
Katsunori Kawano, Ashigarakami-gun, JP;
Yasuhiro Ogasawara, Ashigarakami-gun, JP;
Jiro Minabe, Ashigarakami-gun, JP;
Shin Yasuda, Ashigarakami-gun, JP;
Hisae Yoshizawa, Ashigarakami-gun, JP;
Norie Matsui, Ashigarakami-gun, JP;
Kazuhiro Hayashi, Ashigarakami-gun, JP;
Katsunori Kawano, Ashigarakami-gun, JP;
Yasuhiro Ogasawara, Ashigarakami-gun, JP;
Jiro Minabe, Ashigarakami-gun, JP;
Shin Yasuda, Ashigarakami-gun, JP;
Hisae Yoshizawa, Ashigarakami-gun, JP;
Norie Matsui, Ashigarakami-gun, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
While Fourier transformation of a signal light beam is performed to perform recording during holographic recording so that a focal point is formed outside a holographic recording layer (defocus recording), an aperture is arranged on an outgoing side of the reproduced signal light beam (reproduction light beam), the reproduction light beam is focused at the aperture, and low-order components of a Fourier transform image of the reproduction light beam are selectively transmitted to detect only the transmitted light beam. Therefore, information recorded as the hologram in the holographic recording layer can be reproduced with high S/N ratio from the holographic recording layer added onto a support body, particularly onto a sheet member having non-optical quality such as paper and a plastic card.