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:
Oct. 11, 2011
Filed:
Sep. 03, 2008
Takanori Mukai, Tokyo, JP;
Fumito Kageura, Kanagawa, JP;
Masami Yoshioka, Kanagawa, JP;
Toshihide Nakane, Kanagawa, JP;
Takanori Mukai, Tokyo, JP;
Fumito Kageura, Kanagawa, JP;
Masami Yoshioka, Kanagawa, JP;
Toshihide Nakane, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A lens barrel rotation detection apparatus for detecting a rotational state of a lens barrel to which a lens for image pickup is attached and which is rotated in a horizontal direction or a vertical direction by driving force of a driving section, includes: a single rotatable member rotatable together with rotation of the lens barrel; and three rotation detection section for detecting a rotational state of the rotatable member. The rotatable member has a fixed pattern formed thereon so as to be detected by said rotation detection section and a rotation limit section indicative of limit positions of a range of rotation of the lens barrel. The rotation detection section is disposed for detection of presence or absence of rotation of the rotatable member and the limit positions of the range of rotation.