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. 07, 2009
Filed:
Sep. 07, 2005
Shinji Mitsuya, Miyagi-ken, JP;
Shinji Mitsuya, Miyagi-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
There is provided a holographic device that reproduces information by irradiating light beams emitted from a light beam generator onto a recording medium formed with a hologram. The light beam generator has a substrate and a plurality of light emitting units provided on the substrate, and each of the plurality of light emitting units is composed of a laser oscillator for emitting laser light having a wider wavelength bandwidth than single-mode laser light. In addition, a condensing means is provided between the light beam generator and the recording medium in order to condense a plurality of light beams emitted from each of the light emitting units onto approximately the same location of the recording medium.