Motor lens assembly and corresponding camera module

Abstract

The present application provides a motor lens assembly, including a carrier, which has a first inner surface, a first outer surface, and a first end surface continuously extending from the first inner surface to the first outer surface, and the The first inner surface forms a through hole adapted to accommodate the lens barrel; the lens barrel is located in the through hole, the lens barrel has a second inner surface and a second outer surface, and the second outer surface is connected to the second outer surface. There is a gap between the first inner surfaces; a lens group, which is installed on the second inner surface; an elastic piece, which has a fixed end fixed to the carrier and a movable end fixed to the lens barrel; and shape memory The alloy wire is located in the gap, and the shape memory alloy wire connects the lens barrel and the carrier, so that the expansion and contraction of the shape memory alloy wire can drive the lens barrel to move relative to the carrier. The application also provides a corresponding camera module. The application can reduce the volume of the motor lens assembly and the corresponding camera module.

Description

technical field [0001] The present invention relates to the technical field of photography and camera equipment, in particular, the present invention relates to the technical field of miniaturized compact camera modules. Background technique [0002] In the prior art, the voice coil motor is widely used in the camera module. The voice coil motor has a support frame and a carrier, and drives the carrier to move relative to the support frame through electromagnetic action. The gap between the carrier and the lens is filled with glue to Make the carrier and the lens tightly together. In this way, under the drive of electromagnetic, the carrier drives the lens to move relative to the support frame together, so as to realize functions such as auto-focus, optical zoom, and optical anti-shake. In the voice coil motor, the lens is driven by electromagnetic force to move, but the electromagnetic drive requires magnets, coils, etc. to form a complete set of drive components. The real...

AI Technical Summary

Problems solved by technology

However, the multi-directional shape memory alloy-based drive leads to complex shape memory alloy-based wiring, which increases the difficulty of the process and reduces the stability of the structure. At the same time, the larger number of shape-memory alloy-based wires also increases the manufacturing cost.

[0005] Furthermore, the camera modules or motor-lens assemblies based on shape memory alloys in the prior art often still have relatively large volume and weight, and it is difficult to meet the demand for miniaturization of camera modules in the current market (especially the smart phone market)

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