Optical image stabilization voice coil motor

Abstract

Discloses is an optical image stabilization voice coil motor. The motor comprises a housing and a base connected with the housing, a frame is disposed in the housing, an upper end face of the housing is provided with a central through hole, a lens carrier is disposed in the central through hole, an upper elastic piece outer frame of an upper elastic piece is installed on the frame, and a lower elastic piece outer frame of a lower elastic piece is installed on the base. The motor is characterized in that an upper coil and a lower coil are installed on a side wall of the lens carrier, and the upper coil and the lower coil are arranged side by side from top to bottom; an upper magnet and a lower magnet are disposed respectively corresponding to the upper coil and the lower coil, and the upper magnet and the lower magnet have opposite polarities; and one of the upper and lower coils corresponds to one magnet, and the other one of the upper and lower coils corresponds to the two magnets. The motor has the advantages of simple structure, low production cost, electricity conservation and multi-DOF (degree of freedom) image stabilization.

Description

technical field [0001] The invention relates to the technical field of a lens driving device with an autofocus function; in particular, it relates to a voice coil motor with an optical anti-shake function. Background technique [0002] With the continuous development and advancement of technology, consumers have higher and higher requirements for the imaging quality of portable digital products (such as smart phones and tablet computers). At present, the optical image stabilization (OIS) function has been widely used in digital cameras; however, the optical image stabilization function has not been popularized in camera modules of portable digital products. Optical image stabilization is a built-in gyroscope in the lens. The gyroscope detects a small movement and sends a signal to the microprocessor to immediately calculate the displacement to be compensated, and then compensate according to the direction and displacement of the lens. The position and angle of the lens grou...

AI Technical Summary

Problems solved by technology

When the shaft-shifting optical anti-shake voice coil motor is taking pictures, the optical axis of the lens will be tilted, which is not perpendicular to the chip. Once tilted, it will affect the edge imaging effect; the structure of the translational optical anti-shake voice coil motor is complex and the cost of materials is high. , high cost, low yield rate, high power consumption, a large number of PIN pins using Hall chips, and the OIS function will fail under strong magnetic field conditions

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