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:
Jan. 26, 2010
Filed:
Dec. 15, 2005
Hitoshi Okada, Chiba, JP;
Hitoshi Okada, Chiba, JP;
Sony Corporation, , JP;
Abstract
A holographic recording/reproducing apparatus is adapted to split laser light into signal light and reference light and to record a hologram by illuminating a holographic recording medium with the signal light and the reference light and/or to reproduce the hologram by illuminating the holographic recording medium with the reference light. The holographic recording/reproducing apparatus includes a laser light source that emits the laser light, a measuring unit operable to measure the wavelength of the laser light, and a setting unit operable to measure the wavelength of the laser light while changing a current supplied to the laser light source, and to set the current supplied to the laser light source based on a measurement result such that the influence of a change in the wavelength of the laser light is minimized.