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:
Oct. 13, 1998
Filed:
Jul. 24, 1997
Applicant:
Inventors:
Susumu Tamura, Sagamihara, JP;
Takanori Honda, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
396296 ; 396373 ; 396378 ;
Abstract
A viewfinder system includes an optical system for guiding, to an observer, light coming from an object, a liquid crystal display of transmission type provided in an optical path of the optical system, the liquid crystal display having transmittances which differ with wavelengths, and a transmittance uniforming coating provided in the optical path of the optical system, the transmittance uniforming coating making, substantially uniform irrespective of wavelengths, transmittances of light which has passed through the optical system and the liquid crystal display.