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.:

US 7295389 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 13, 2007

Filed:

Nov. 14, 2005
Applicants:

Katsumi Ohtsuka, Hachioji, JP;

Tohru Horiuchi, Inagi, JP;

Inventors:

Katsumi Ohtsuka, Hachioji, JP;

Tohru Horiuchi, Inagi, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A lens barrel includes a lens group that conducts light from a subject, a lens shell that holds the lens group; a string-formed shape memory alloy element that moves the lens shell in a direction of an optical axis, and a pair of guide shafts formed approximately in parallel to the optical axis of the lens group, wherein the lens shell is integrally formed with a cylindrical portion through which one of the guide shafts penetrates, the string-formed shape memory alloy element contacts with a portion of the lens shell at an approximately central portion of the alloy element, and both ends of the alloy element are fixed at respective positions with a line connecting the optical axis of the lens group and a center of the cylindrical portion between the positions.


Find Patent Forward Citations

Ohtsuka, Katsumi. (2007). Lens barrel, image-pickup unit having the lens barrel, and manufacturing method of the same (U.S. Patent No. 7295389). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7295389

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