Camera Module With Synchronized Lens And Circuit-Board Drives
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Solution Overview
Problem
The flexible circuit board in a gimbal camera interferes with the motion of the gimbal during actuation, limiting the optical anti-shake performance.
Innovation Solution
A camera module with separate drive assemblies for the lens assembly and circuit board, allowing them to move in the same direction, preventing the circuit board from being pulled by the lens assembly, thereby enabling greater movement range and angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lens assembly moves during gimbal actuation, then the anti-shake performance is improved, but the flexible circuit board pulls and interferes with the motion
Solution Approach 1:
The patent divides the gimbal system into two independently driven subsystems: one for the lens assembly (with first drive assembly) and one for the circuit board (with second drive assembly). This segmentation allows each component to be controlled separately, preventing the circuit board from interfering with lens assembly motion while maintaining anti-shake functionality.
Solution Approach 2:
The patent introduces a second drive assembly as an intermediary mechanism that actively drives the circuit board to move synchronously with the lens assembly. This mediator prevents the circuit board from being passively pulled during gimbal actuation, eliminating the harmful interference while enabling greater movement range.
2Device complexity
If the circuit board is fixed during lens assembly motion, then the structure is simple, but the movement distance and rotation angle are limited
Solution Approach 1:
The patent transitions from a static circuit board configuration to a dynamic one where the circuit board is actively driven by the second drive assembly. This allows the circuit board to move synchronously with the lens assembly, significantly increasing the movement distance and rotation angle without excessive structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the anti-shake performance by synchronizing the movement of the lens assembly and circuit board, reducing interference and allowing for longer distances and larger angles of movement.
Implementation Method 1
the first drive assembly includes a first magnetic part and a first coil, where one of the first magnetic part and the first coil is connected to the housing, the other of the first magnetic part and the first coil is connected to the lens assembly
Implementation Method 2
the second drive assembly includes a second magnetic part and a second coil, where one of the second magnetic part and the second coil is connected to the housing, the other of the second magnetic part and the second coil is connected to the circuit board
Data Source
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AI summary
This application discloses a camera module and an electronic device. The camera module includes: a housing, an accommodating chamber being provided in the housing; a lens assembly, the lens assembly being movably disposed in the accommodating chamber; a first drive assembly, the first drive assembly being connected to the lens assembly so as to drive the lens assembly to move, and at least part of the first drive assembly being disposed on an inner side wall of the housing; a circuit board, the circuit board being connected to the lens assembly; and a second drive assembly, the second drive assembly being disposed in the housing, and at least part of the second drive assembly being connected to the circuit board so as to drive the circuit board to move.