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:
May. 26, 2009
Filed:
May. 10, 2005
Yoshihiro Someno, Miyagi-ken, JP;
Yoshihiro Someno, Miyagi-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A compact and low-cost hologram reproducing apparatus with a simple mechanism is provided. A light sourceand a lensfor generating parallel light are provided on an inner surface of a housing. By changing the angle of a biaxially driven galvanometer mirrorprovided at an appropriate position opposing the light sourceand the lens, reflected light is applied two-dimensionally, in the vertical and horizontal directions, on a recording elementmounted below and adjacent to the housing, and is entered as reference light in holograms. Further, light beams exiting from the holograms are received at the same optimal position on a light-receiving elementdisposed in an upper part of the housing. The received light is subjected to data decoding so as to reproduce read-only holograms.