Lens-driving device
By employing a closed magnetic circuit system and guide rod structure in the lens drive device, the problems of insufficient driving force and wobbling motion are solved, and more stable lens module motion is achieved.
WO2026123245A1PCT designated stage Publication Date: 2026-06-18AAC MICROTECH (CHANGZHOU) CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- AAC MICROTECH (CHANGZHOU) CO LTD
- Filing Date
- 2024-12-11
- Publication Date
- 2026-06-18
AI Technical Summary
⚠Technical Problem
When the shared magnetic circuit system in the lens drive device drives the lens module to move along its optical axis, the driving force is insufficient, and the lens module is prone to yaw motion during movement.
⚗Method used
By adopting a closed first magnetic circuit system design and a guide rod structure, the first drive component and the second drive component are decoupled, and a guide rod that forms a sliding connection with the second support is set on the first support to enhance the driving force and suppress yaw motion.
🎯Benefits of technology
It increases the driving force of the lens module along the optical axis and effectively suppresses yaw motion, thereby improving the motion stability of the lens drive device.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN2024138486_18062026_PF_FP_ABST
Abstract
A lens-driving device, comprising: a housing, which comprises a bottom plate and an upper cover; a first bracket, which is elastically supported on the bottom plate; a second bracket, which is elastically supported on the first bracket and is configured to mount a lens module; a first driving assembly, which comprises a first magnetic circuit system fixed to the first bracket and a driving coil fixed to the second bracket; a guide rod, which is fixed to the first bracket and slidably connected to the second bracket; and a second driving assembly, which comprises a second magnetic circuit system and an image-stabilization coil oppositely spaced apart from the second magnetic circuit system. The lens-driving device can not only improve the driving force when the first magnetic circuit system drives the lens module to move in the optical axis direction thereof, but also guide the second bracket by means of the added guide rod, thereby preventing the lens module from generating deflection motion when moving in the optical axis direction thereof.
Need to check novelty before this filing date? Find Prior Art