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. 18, 2004
Filed:
Dec. 31, 2002
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 1/708 ; G03B 1/700 ;
U.S. Cl.
CPC ...
G03B 1/708 ; G03B 1/700 ;
Abstract
A lens apparatus or optical instrument having a lens apparatus including a holding member that holds and moves a lens or a lens group in an optical axis direction, the holding member having a vent providing ventilation between the interior and the exterior of the lens apparatus, a water-repellent microporous member that covers the vent, and an appearance member disposed on the holding member, with a clearance provided between the appearance member and the holding member, so as to shield the water-repellent microporous member.