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:
Mar. 06, 2001
Filed:
Sep. 09, 1999
Applicant:
Inventor:
Takaaki Yano, Hokkaido, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/764 ;
U.S. Cl.
CPC ...
G02B 2/764 ;
Abstract
An optical system for a binocular is provided with an objective optical system, an erecting system and an observing optical system. The objective optical system includes a first lens having positive refractive power, a second lens and a third lens arranged in the order from an object side. At least one lens surface of the first lens is an aspherical surface. One of the second and third lenses has positive refractive power, the other has negative refractive power. The first lens is capable of moving in a direction orthogonal to an optical axis to stabilize an image.