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:
May. 29, 2001
Filed:
Feb. 22, 2000
Applicant:
Inventors:
Akio Nishizawa, Yokohama, JP;
Kiyosada Machida, Urawa, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 1/720 ;
U.S. Cl.
CPC ...
G03B 1/720 ;
Abstract
Equipped with a display element which displays a visual field frame in the picture plane by means of obstructing the subject light beam, and which is formed from material which scatters light, and irradiation means which irradiates light to the said display element. When the irradiation means is caused to operate, because its light is scattered by the display element and guided to the eyepiece side, the display element can namely cause the visual field frame portion to shine brightly.