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:
Dec. 20, 2011
Filed:
Sep. 11, 2009
Shin Yasuda, Kanagawa, JP;
Jiro Minabe, Kanagawa, JP;
Katsunori Kawano, Kanagawa, JP;
Yasuhiro Ogasawara, Kanagawa, JP;
Kazuhiro Hayashi, Kanagawa, JP;
Shin Yasuda, Kanagawa, JP;
Jiro Minabe, Kanagawa, JP;
Katsunori Kawano, Kanagawa, JP;
Yasuhiro Ogasawara, Kanagawa, JP;
Kazuhiro Hayashi, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A light-collecting device is provided, a light-collecting device, including: a first volume hologram recorded in a hologram recording layer by interference of a first spherical wave and a planar wave, the first spherical wave passing through a light path of diffused light which radiates from a light incident point, passes through the hologram recording layer and spreads to a predetermined diameter; and a second volume hologram recorded in the hologram recording layer by interference of a second spherical wave and the planar wave, the second spherical wave passing through a light path of converging light which radiates from the same side as the first spherical wave, passes through the hologram recording layer and converges at an image-forming point distanced from the hologram recording layer by a predetermined distance, the planar wave intersecting with the first spherical wave and the second spherical wave.