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:
Jul. 17, 2012
Filed:
Mar. 29, 2010
Kazushi Uno, Kawasaki, JP;
Koichi Tezuka, Kawasaki, JP;
Hiroyasu Yoshikawa, Kawasaki, JP;
Yasumasa Iwamura, Kawasaki, JP;
Yuzuru Yamakage, Kawasaki, JP;
Satoshi Shimokawa, Kawasaki, JP;
Kazushi Uno, Kawasaki, JP;
Koichi Tezuka, Kawasaki, JP;
Hiroyasu Yoshikawa, Kawasaki, JP;
Yasumasa Iwamura, Kawasaki, JP;
Yuzuru Yamakage, Kawasaki, JP;
Satoshi Shimokawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A hologram recorder includes a signal beam irradiator to irradiate a signal beam, which is optically modulated in accordance with information to be recorded, to a recording medium at a predetermined incident angle. The hologram recorder also includes a recording prism provided with surfaces including an incident surface, a reflective surface and an emission surface for light so that a recording reference beam is guided to the recording medium by way of these surfaces. A pivot mechanism of the hologram recorder causes the recording prism to pivot above the recording medium for changing the incident angle of the recording reference beam at the recording medium, with the recording reference beam kept to overlap the signal beam.