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:
Sep. 13, 2011
Filed:
Aug. 20, 2009
Hidekazu Nakamura, Utsunomiya, JP;
Hidekazu Nakamura, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical apparatus includes a second membersupporting a first memberso as to be movable in an optical axis direction and biasing devicesandhaving biasing force acting on the first member. Two first ballsandare arranged at positions away from each other in the optical axis direction and a second ballis arranged at a phase different from that of the first balls. The first and second members include guide sectionsandengaging with the first balls so as to permit a rolling motion of the first balls in the optical axis direction and prevent a displacement of the first member in a different direction and a rotation preventing section permitting a rolling motion of the second ball in the optical axis direction and preventing a rotation of the first member around the guide section.