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.:

US 7576899 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 18, 2009

Filed:

Mar. 03, 2006
Applicants:

Tomoki Kanesaka, Miyagi, JP;

Nobuhiro Kihara, Kanagawa, JP;

Shigeyuki Baba, Tokyo, JP;

Hisayuki Yamatsu, Tokyo, JP;

Megumi Ezura, Tokyo, JP;

Inventors:

Tomoki Kanesaka, Miyagi, JP;

Nobuhiro Kihara, Kanagawa, JP;

Shigeyuki Baba, Tokyo, JP;

Hisayuki Yamatsu, Tokyo, JP;

Megumi Ezura, Tokyo, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

A hologram recording device for recording interference fringes between reference light and signal light modulated by data displayed in a spatial modulator in a hologram recording material, the hologram recording device including a phase mask for diffusing light, the phase mask being disposed in an optical system that the signal light passes, wherein a minimum unit of a light diffusing pattern formed in the phase mask is a natural number of times a minimum unit of display data of the spatial modulator.


Find Patent Forward Citations

Kanesaka, Tomoki. (2009). Hologram recording device and phase mask having a diffusing pattern with a minimum unit in relation to a minimum unit of a spatial modulator (U.S. Patent No. 7576899). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7576899

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