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. 20, 2007
Filed:
Nov. 14, 2005
Takeshi Sue, Nagano, JP;
Noboru Ootsuki, Nagano, JP;
Takeshi Sue, Nagano, JP;
Noboru Ootsuki, Nagano, JP;
Nidec Sankyo Corporation, Nagano, JP;
Abstract
Lens drive unit is provided with a moving lenticular body (sleeve, etc.) equipped with a lens, a driving mechanism to move the moving lenticular body in the optical axis direction of the lens and a fixed body (yoke, etc.) that supports the moving lenticular body so as to make it movable in the optical axis direction of the lens. The driving mechanism is provided with magnetmagnetized in the direction perpendicular to the optical axis direction of the lens, and multiple coils (first coiland second coil) arranged so that the magnet is present in the optical axis direction of the lens. Either one of the magnet and the multiple coils is installed in the moving lenticular body, and the other in the fixed body. The driving mechanism is provided with a controlling element (flat spring) to control the movement of the moving lenticular body caused by the electromagnetic force when a current is supplied to the multiple coils to generate the electromagnetic force, and magnetic memberis attracted to magnetand is arranged on the opposite side of magnetic memberso as to sandwich one of the multiple coils between magnetic memberand magnet