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. 09, 2013
Filed:
Feb. 15, 2008
Tomiji Tanaka, Saitama, JP;
Masaaki Hara, Tokyo, JP;
Kazutatsu Tokuyama, Tokyo, JP;
Satoru Seko, Kanagawa, JP;
Shinji Yamada, Kanagawa, JP;
Hitoshi Okada, Chiba, JP;
Tomiji Tanaka, Saitama, JP;
Masaaki Hara, Tokyo, JP;
Kazutatsu Tokuyama, Tokyo, JP;
Satoru Seko, Kanagawa, JP;
Shinji Yamada, Kanagawa, JP;
Hitoshi Okada, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A hologram reproducing apparatus includes a first reference light path leading laser light from a laser light source so that a hologram recording medium is irradiated with first reference light; a diffracted light path leading diffracted light, generated from the hologram recording medium by irradiation with the first reference light, to a light receiving element having a plurality of pixels; and a second reference light path leading second reference light, having the same polarization direction as that of the diffracted light, from the laser light source to the light receiving element. The second reference light path is provided with a phase modulating element so that the phase difference between the diffracted light and the second reference light in a light receiving surface of the light receiving element is adjusted within a predetermined range.