Piezoelectric-driving optical lens

Abstract

A piezoelectric-driving optical lens is disclosed, which comprises: a lens, having a barrel with a friction ring annularly mounted on the outer wall of the barrel as the outer diameter of the friction ring is larger than that of the barrel; a plurality of piezoelectric stators, arranged surrounding the lens and abutted against the friction ring, for providing a rotation driving force to the lens for focusing or zooming function; and a seat, for receiving the lens and the plural piezoelectric stators; wherein, the plural piezoelectric stators can actuate simultaneously to output a maximum driving torque.

1 . A piezoelectric-driving optical lens, comprising:
 a lens, having a cylindrical barrel with a friction ring annularly mounted on the outer wall of the barrel as the outer diameter of the friction ring is larger than that of the cylinder;   a plurality of piezoelectric stators, arranged surrounding the lens and abutted against the friction ring, for providing a rotation driving force to the lens, wherein each piezoelectric stator is configured of a metal tube and a piezoelectric ceramic piece, each being arranged to adhere to a side of the metal tube, while the metal tube is arranged to abut against the friction ring, and each piezoelectric ceramic piece is polarized in segments; and   a seat, for receiving the lens and the plural piezoelectric stators.   
   
   
       2 . The piezoelectric-driving optical lens of  claim 1 , wherein electrodes are coated on each piezoelectric ceramic piece according to a predetermined pattern. 
   
   
       3 . The piezoelectric-driving optical lens of  claim 1 , wherein each piezoelectric ceramic piece is divided into sections and polarized respectively while each section is adhered upon its corresponding side of the metal tube in respective. 
   
   
       4 . A piezoelectric-driving optical lens, comprising:
 a lens, having a cylindrical barrel with a friction ring annularly mounted on the outer wall of the barrel as the outer diameter of the friction ring is larger than that of the cylinder;   a first piezoelectric stator, arranged surrounding the lens and abutted against the friction ring, for providing a rotation driving force to the lens, wherein the first piezoelectric stator is driven with respect to two idler wheels; and   a seat, for receiving the lens and the plural piezoelectric stators.   
   
   
       5 . The piezoelectric-driving optical lens of  claim 4 , wherein the piezoelectric-driving optical lens further comprises a second piezoelectric stator and a third piezoelectric stator wherein the first piezoelectric stator, the second piezoelectric stator, and the third piezoelectric stator can be driven independently or simultaneously. 
   
   
       6 . The piezoelectric-driving optical lens of  claim 4 , wherein the piezoelectric-driving optical lens further comprises a second piezoelectric stator wherein the first piezoelectric stator and the second piezoelectric stator can be driven independently or simultaneously with respect to an idler wheel.