Optical focusing mechanism

Abstract

The invention provides an optical focusing device, including base, sleeve which is coupled with the base, screw thread is connected with lens of the sleeve, and piezoelectric actuator which is fixed in the base for contiguously driving sleeve rotating, the base and the lens are respectively equipped with corresponding locating sliding first guiding part and second guiding part, then the sleeve is driven to rotate for converting and forcing the lens to focus. So the optical focusing device having simple components improves the driving force and overcomes the defects that the component with prior art is complex.

Description

technical field [0001] The invention relates to a driving technology of an optical lens, in particular to a piezoelectric-driven optical focusing device. Background technique [0002] In recent years, the optical system used in mobile phones or cameras, due to the limitation of its own thickness, will make the structure of the optical system and actuator as simple as possible, and the volume as small as possible, so as to adapt to the development trend of low architecture of such devices. Piezoelectric actuators have the advantages of small size, large output, low power consumption, silence and high compatibility, and are used in digital cameras or camera phones to drive optical lenses to make the optical lenses zoom in Or the effect of zooming out has become one of the important technologies of optical systems or related products. [0003] my country’s Patent of Invention No. 589777 discloses a multi-layer thin-disc piezoelectric actuated ultrasonic motor, which passes a p...

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned shortcomings of the prior art, how to provide an optical focusing device to achieve the functions of large driving torque, small size, simple componen

Images