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:
Apr. 03, 2012
Filed:
Mar. 21, 2008
Makoto Furuki, Minamiashigara, JP;
Kazuhiro Hayashi, Minamiashigara, JP;
Jiro Minabe, Minamiashigara, JP;
Katsunori Kawano, Minamiashigara, JP;
Yasuhiro Ogasawara, Minamiashigara, JP;
Shin Yasuda, Minamiashigara, JP;
Koichi Haga, Ebina, JP;
Hisae Yoshizawa, Kanagawa, JP;
Makoto Furuki, Minamiashigara, JP;
Kazuhiro Hayashi, Minamiashigara, JP;
Jiro Minabe, Minamiashigara, JP;
Katsunori Kawano, Minamiashigara, JP;
Yasuhiro Ogasawara, Minamiashigara, JP;
Shin Yasuda, Minamiashigara, JP;
Koichi Haga, Ebina, JP;
Hisae Yoshizawa, Kanagawa, JP;
Fuji Xerox Co., Ltd, Tokyo, JP;
Abstract
An optical apparatus includes: a focusing lens that focuses light which is one of recording light being irradiated to an optical recording medium with reference light for recording a hologram and reference light being irradiated to an optical recording medium for reading out a hologram; and a focal position-shifting unit that refracts the light while moving in accordance with a moving speed of the optical recording medium, so as to shift a focal position of the light in the optical recording medium a distance in a thickness direction of the optical recording medium.