US 2013/0258506 A1Published application

Electromagnetic Driving Device for Lens having an Anti-Tilt Mechanism

AssigneeTDK Taiwan Corp.

InventorJin Yu Lee

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Abstract

An electromagnetic driving device defined with an X axis, a Y axis and a Z axis includes a casing, a base, a driven object, an anti-tilt mechanism and an electromagnetic driving module. The electromagnetic driving module includes at least one magnetic member and at least one coil. The base connects to the casing so as to form an inner compartment thereinside. The driven object is received and movable along the Z axis inside the inner compartment. The magnetic member fixed to the driven object can be driven by magnetic forcing generated by the respective coil fixed to the casing. With the anti-tilt mechanism to provide lateral pressing forcing to eliminate possible gap between components connecting the driven object and the casing while the driven object is moved along the Z axis inside the inner compartment, possible dynamic tilt of the moving driven object can then be diminished.

Claims13

Dependent claims

An electromagnetic driving device for lens having an anti-tilt mechanism, defined with an X axis, a Y axis and a Z axis, comprising:

a casing;
a base, connected the casing to form an inner compartment in between;
a driven object, received inside the inner compartment, allowed to displace in the casing along the Z axis;
an anti-tilt mechanism for eliminating X-axial or Y-axial gaps around the driven object inside the inner compartment;
and
an electromagnetic driving module, further including at least one magnetic member and at least one coil, said at least one magnetic member located at the driven object being positioned respectively to said at least one coil located at the casing;
wherein, by utilizing said at least one coil and said at least one magnetic member, the driven object is electromagnetically driven to displace inside the inner compartment along the Z axis;
wherein, while the driven object is moving, the anti-tilt mechanism is to eliminate dynamic tilt of the driven object.

5 more elements

Dependencies are inferred from the claim text.