Invention Grant
- Patent Title: Linear motor and camera module having the same
- Patent Title (中): 线性电机和相机模块具有相同的功能
-
Application No.: US12332942Application Date: 2008-12-11
-
Publication No.: US07672069B2Publication Date: 2010-03-02
- Inventor: Kwang Kim , Ki-Bum Park
- Applicant: Kwang Kim , Ki-Bum Park
- Applicant Address: KR Gyeonggido
- Assignee: Korea Polytechnic University Industry Academic Cooperation Foundation
- Current Assignee: Korea Polytechnic University Industry Academic Cooperation Foundation
- Current Assignee Address: KR Gyeonggido
- Agency: Kinney & Lange, P.A.
- Priority: KR10-2007-0129344 20071212
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B7/02

Abstract:
A linear motor and a camera module having the linear motor are provided. The linear motor includes: a piezoelectric substrate generating a vibration mode in a longitudinal direction on the basis of an applied voltage; first and second shafts coupled to both sides of the piezoelectric substrate with the piezoelectric substrate interposed therebetween; and a moving member coupled to at least one of the first and second shafts to be movable in the longitudinal direction of the first and second shafts and connected to a camera lens on one side. Accordingly, it is possible to remove a dead zone with a simple structure, to prevent an unnecessary increase in thickness, not to cause a stoppage at the time of moving a camera lens, to cause a small amount of tilt to enable a linear control, and to contribute to a decrease in thickness and a compactness of a mobile terminal.
Public/Granted literature
- US20090153987A1 LINEAR MOTOR AND CAMERA MODULE HAVING THE SAME Public/Granted day:2009-06-18
Information query