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:
Nov. 16, 2010
Filed:
Jul. 24, 2006
Yasushi Tanijiri, Osakasayama, JP;
Yoshie Shimizu, Ibaraki, JP;
Tetsuya Noda, Tenri, JP;
Ichiro Kasai, Toyonaka, JP;
Yasushi Tanijiri, Osakasayama, JP;
Yoshie Shimizu, Ibaraki, JP;
Tetsuya Noda, Tenri, JP;
Ichiro Kasai, Toyonaka, JP;
Konica Minolta Photo Imaging, Inc., Tokyo, JP;
Abstract
A hologram optical element is formed on a substrate so as to make an optical device. The hologram optical element is formed in an area smaller than an irradiation area of a beam for reproduction such as image light or object light on the substrate. Supposing that the beam for reproduction is made of a center beam having intensity higher than 50% of center intensity and other peripheral beam, the hologram optical element is formed on the substrate in a size for diffracting only the center beam so that a flare or a ghost can be relieved without using additional optical elements such as a shading plate.