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:
Dec. 15, 2009
Filed:
Feb. 15, 2005
Shin Yasuda, Ashigarakami-gun, JP;
Jiro Minabe, Ashigarakami-gun, JP;
Yasuhiro Ogasawara, Ashigarakami-gun, JP;
Kazuhiro Hayashi, Ashigarakami-gun, JP;
Hisae Yoshizawa, Ashigarakami-gun, JP;
Koichi Haga, Ashigarakami-gun, JP;
Katsunori Kawano, Ashigarakami-gun, JP;
Shin Yasuda, Ashigarakami-gun, JP;
Jiro Minabe, Ashigarakami-gun, JP;
Yasuhiro Ogasawara, Ashigarakami-gun, JP;
Kazuhiro Hayashi, Ashigarakami-gun, JP;
Hisae Yoshizawa, Ashigarakami-gun, JP;
Koichi Haga, Ashigarakami-gun, JP;
Katsunori Kawano, Ashigarakami-gun, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A hologram recording apparatus includes a light source for irradiating coherent light, light separator for separating the coherent light into light for reference beam and light for signal beam, optical path changer for changing an optical path of each light separated by the light separator so that the reference beam and the signal beam may be irradiated simultaneously onto an optical recording medium, a spatial light modulator disposed in the optical path of the light for the signal beam for modulating the light for the signal beam in accordance with a supplied recording signal to create signal beam for recording a hologram, and diffused light irradiator for irradiating diffused light simultaneously with the reference beam at least onto an area of the optical recording medium where the reference beam is irradiated.