Patent ID: 8830603

Claim:
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; wherein said anti-tilt mechanism further includes a first guide-groove located at a rim of said driven object, a constraint block protruded from said base, and a rolling member, the rolling member being received inside a space formed by the first guide-groove and a central portion of the constraint block, both the first guide-groove and the constraint block being extended in a direction parallel to said Z axis.