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. 06, 2010
Filed:
Dec. 18, 2008
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 applies a recording beam (S) and a reference beam (R) to the illumination site (p) of a hologram recording medium (B). The interference between the recording beam (S) and the reference beam (R) produces multiple hologram recording at the illumination site (p). The recorder includes a recording-purpose reference beam reflector () for reflecting the reference beam (R) to the illumination site (p), and a pivot mechanism for pivoting the reflector () about an axis (x) to vary the incident angle (θr) of the reflected reference beam (R) to the recording medium (B). The reflector () is disposed to cross a predetermined optical path. The axis (x) of the pivot mechanism is so arranged that the reflected reference beam (R) is directed to the illumination site (p) even when the incident angle (θr) of the beam (R) changes due to the pivoting of the reflector ().