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:
Sep. 16, 2008
Filed:
Dec. 03, 2003
Applicant:
Itaru Homma, Tokyo, JP;
Inventor:
Itaru Homma, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 17/20 (2006.01); G03H 1/22 (2006.01); G02F 1/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a holographic optical element (), a viewfinder display () of a camera () using thereof, and a camera (). The purpose of the present invention is to show various superimposed displays for various information with securing a bright viewfinder image. In the holographic optical element according to the present invention, a liquid crystal () whose orientation is changeable and a liquid crystal () whose orientation is fixed are arranged alternately with a striped shape between the transparent members () () on which the transparent electrodes () () are formed facing with each other.