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:
Nov. 22, 2005
Filed:
Jan. 23, 2004
Applicant:
Kazushige Ichino, Tokyo, JP;
Inventor:
Kazushige Ichino, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B015/14 ;
U.S. Cl.
CPC ...
Abstract
A unit for performing light blocking and dust proof is disclosed. The light blocking and dust proof unit is fixed to a first optical unit, and is mounted to a second optical unit. The light blocking and dust proof unit is mounted to the second optical unit so as to be movable in the optical axial direction relative to the second optical unit, and to be regulated by different regulating portions of the second optical unit between cases where the light blocking and dust proof unit is contracted and where the light blocking and dust proof unit is expanded. The size of the light blocking and dust proof unit having such a structure can be reduced.