Camera Module Common Magnet Auto-Focusing Handshake Compensation
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Solution Overview
Problem
Existing camera modules for mobile devices face challenges in achieving high-quality images due to manufacturing and assembly tolerances, leading to image blurring from user handshake, which complicates the integration of auto-focusing and handshake compensation systems, often requiring additional components and increasing module size.
Innovation Solution
A camera module design utilizing a common magnet for both auto-focusing and handshake compensation, with a coil for each function, and a bobbin assembly with a suspension support member to elastically support the auto-focusing actuator, allowing for efficient actuation and sensitivity control by adjusting the polarization length of the common magnet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate handshake compensating device is added to the auto-focusing device, then handshake compensation function is improved, but device complexity and module size increase
Solution Approach 1:
The patent merges the auto-focusing device and handshake compensating device into a single integrated actuator system. The common magnet serves dual purposes: it interacts with the first coil to enable auto-focusing and with the second coil to enable handshake compensation. This consolidation eliminates the need for separate magnets and reduces the number of components while maintaining both functions.
Solution Approach 2:
The common magnet is designed to perform multiple functions within the same actuator. By positioning the common magnet to face both the first coil (for auto-focusing) and the second coil (for handshake compensation), a single component achieves what previously required separate dedicated components, thereby reducing device complexity.
2Reliability
If a separate handshake compensating device is added to the auto-focusing device, then handshake compensation function is improved, but the size of the camera module increases
Solution Approach 1:
The patent merges the auto-focusing device and handshake compensating device into a single integrated actuator system. The common magnet serves dual purposes: it interacts with the first coil to enable auto-focusing and with the second coil to enable handshake compensation. This consolidation eliminates the need for separate magnets and reduces the number of components while maintaining both functions.
Solution Approach 2:
The common magnet is designed to perform multiple functions within the same actuator. By positioning the common magnet to face both the first coil (for auto-focusing) and the second coil (for handshake compensation), a single component achieves what previously required separate dedicated components, thereby reducing device complexity.
3Measurement precision
If the polarization length of the common magnet is adjusted, then actuating sensitivity of auto-focusing is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes parameter changes in the common magnet's polarization length to control the actuating sensitivity of the auto-focusing function. By adjusting the polarization length, the magnetic field strength and distribution are modified, thereby tuning the sensitivity and actuating characteristics of the system to achieve optimal performance.
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
This design enhances the actuating force and sensitivity for auto-focusing and handshake compensation, reducing the need for additional components and module size, while maintaining high-quality image capture by using a single common magnet for both functions.
Implementation Method 1
one surface of the common magnet for actuating auto-focusing and handshake compensation faces a coil for auto-focusing
Implementation Method 2
the other surface of the common magnet for actuating auto-focusing and handshake compensation faces the coil for handshake compensation
Implementation Method 3
a bobbin assembly with a suspension support member to elastically support the auto-focusing actuator
Data Source
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AI summary
A camera module including: a lens barrel; (100) an auto-focusing actuator (200); and a handshake compensating actuator (300), wherein the auto-focusing actuator and the handshake compensating actuator include a common magnet (210) for actuating auto-focusing and handshake compensation, an auto-focusing corner magnet, (230) a coil (221) for auto-focusing, and a coil (310) for handshake compensation, one surface of the common magnet (210) for actuating auto-focusing and handshake compensation and the auto-focusing corner magnet (230) face the coil (221) for auto-focusing and the other surface of the common magnet (210) for actuating auto-focusing and handshake compensation faces the coil (310) for handshake compensation.