lens assembly

Abstract

The present invention provides a lens assembly, including a first base, a lens, a first memory alloy wire and a second memory alloy wire, the lens is slidably installed in the first base, and the first base includes a second memory alloy wire arranged on one side of the lens. One side plate and the second side plate arranged on the other side of the lens, one end of the first memory alloy wire is connected to the first side plate, the other end is connected to the lens, one end of the second memory alloy wire is connected to the second side plate, The other end is connected with the lens, and both the first memory alloy wire and the second memory alloy wire are arranged perpendicular to the optical axis of the lens. The lens assembly provided by the present invention drives the lens to move back and forth relative to the first side plate and the second side plate by arranging the first memory alloy wire and the second memory alloy wire to be energized and deformed to achieve optical anti-shake without magnetic field interference. The stability is high, and the setting method of the drive is simple in structure and easy to install, without additional Hall elements, and has high reliability in special environments.

Description

【Technical field】 [0001] The invention relates to the technical field of lens optical imaging, in particular to a lens assembly. 【Background technique】 [0002] In recent years, high-performance lens modules have been mounted on portable terminals such as smartphones and tablet computers. The high-performance lens module generally has an auto focusing function (auto focusing) and an optical image stabilization function (OIS: optical image stabilization). [0003] The optical anti-shake function of the existing camera lens module is to sense the offset between the OIS bracket and the optical axis through the Hall sensor, and input current to the OIS coil, and the OIS coil cooperates with a magnet to prevent the OIS bracket and the optical axis from shifting. Return it to its original position. The lens module in this embodiment moves under the action of electromagnetic force, which is easily disturbed by the magnetic field, and additional Hall elements are needed to detect ...

AI Technical Summary

Problems solved by technology

The lens module in this embodiment moves under the action of electromagnetic force, which is easily disturbed by the magnetic field, and additional Hall elements are needed to detect the shaking of the lens barrel, which has poor reliability in special environments; in addition, the anti-shake The structure includes OIS coils and magnets. The overall structure is complex, costly, and heavy. In addition, a large current needs to be passed through the OIS coil to form a large electromagnetic force to drive the magnet to prevent the OIS bracket and the optical axis from shifting. Power consumption high

In summary, the existing optical anti-shake structure of the lens module cannot meet the market requirements of light weight, low power consumption, low cost and high reliability

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