Patent ID: 7587135
Filing Date: 2009-09-08
Classification: G02B,G03B

Abstract:
1. An auto-focus optical lens module, comprising: a base body having a receiving space, an optical hole connected to the receiving space, and a first guiding portion adjacent to the receiving space; a lens sleeve rotatably disposed in the receiving space away from the optical hole and having a first screwing portion; a lens disposed in the receiving space adjacent to the optical hole, the lens having a second screwing portion to be engaged with the first screwing portion of the lens sleeve, and a second guiding portion to be slidably positioned to the first guiding portion of the base body, through which the lens being able to axially move according to a rotation of the lens sleeve; and a piezoelectric element fixed in the base body and contacting an outer side of the lens sleeve for driving the lens sleeve to rotate relative to the lens, thereby enabling the lens to focus, wherein the piezoelectric element has an axis parallel to that of the lens sleeve.