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. 26, 2000
Filed:
Sep. 29, 1998
Applicant:
Inventor:
Itaru Homma, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
396296 ; 396147 ; 396150 ; 396384 ; 396386 ;
Abstract
A viewfinder device that includes a screen on which an image is projected, and an eyepiece lens through which the image is viewed. An optical member passes light beams from the screen to the eyepiece lens through an information display member, and a diffraction optical element diffracts light beams in the direction of the eyepiece lens so that diffracted light beams from the information display member are superposed over the viewed image.