Photography module

Abstract

The invention provides a photography module which at least comprises a lens, an electric control focusing element, an elastic element, a supporting seat and an optical-sensing element. In the invention, a movable part of the electric control focusing element is electrically driven to lead the lens of a camera module arranged on the movable part to move along an optical axis straight line so as to execute the function of electric control focusing. The elastic element is arranged on the electric control focusing element by the camera module and is equipped with a plurality of elastic force arms; and each elastic force arm is equipped with a plurality of continuous and radial routing bending parts, which can averagely absorb rotating distortion of the lens, plane axial offset and a certain amount of stress accumulated by inclination change, can not cause permanent deformation, can effectively utilize space, increase the length of the force arms, and effectively lower a K value of a spring.

Description

technical field [0001] The present invention relates to a photographic module with an electronically controlled focusing element, in particular to a photographic module in which the electronically controlled focusing element adopts a voice coil motor (Voice Coil Motor, VCM) structure. Background technique [0002] Many electronic devices require an actuator, such as a mobile phone with a vibration function, a magnetic head with a vertical displacement actuator, and an auto-focus module camera; the most commonly used actuator is a Voice Coil Motor (Voice Coil Motor). Motor, VCM), because the voice coil motor (Voice CoilMotor, VCM) can achieve precise displacement, and the price is cheap, suitable as a short-distance micro-actuator for electronic devices. [0003] The short-distance micro-actuator can be applied to a camera module as an electronically controlled focusing element for automatic focusing. Please refer to figure 1 , is a schematic cross-sectional structure diagr...

AI Technical Summary

Problems solved by technology

When the elastic element 200 is subjected to the torsion generated by the lens 10 being rotated and inserted into the lens holder 12, the tensile force generated by the axial offset of the plane of the lens 10 and the stress generated by the tilt angle of the lens 10, and When deformation occurs due to the forward and backward movement of the lens carrier 12 to stretch the elastic force arms, since each elastic force arm has the same arc bending shape, the accumulated stress cannot be absorbed through each arc bend. As a result, all the stresses are finally concentrated on the joints between the elastic force arms and the aforementioned outer and inner edge areas, so that the aforementioned inner and outer edge areas are subjected to excessive internal vertical stress, which will easily cause the above-mentioned The joints of the elastic element 200 are fatigued, which reduces the service life of the elastic element 200

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