Imaging Module Lens Alignment Compensation for Magnetic Field Tilt
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Solution Overview
Problem
Imaging modules with optical image stabilizing functions in electronic devices, such as smartphones, face issues with lens group tilting due to magnetic fields from components like speakers, leading to image quality inconsistencies and reduced resolution.
Innovation Solution
A method for manufacturing imaging modules that involves fixing the lens unit and imaging device unit together while accounting for the tilt caused by magnetic fields, using an elastic support unit and magnetic members to adjust the optical axis, ensuring the lens group remains aligned even near magnetic-field generating units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the imaging module is disposed near the magnetic-field generating unit to enhance flexibility of component placement, then the flexibility of disposition is improved, but the lens group tilts from the reference position due to magnetic field effects
Solution Approach 1:
The patent applies preliminary anti-action by pre-adjusting the lens group position during manufacturing to compensate for the magnetic field-induced tilt. The lens group is positioned at a predetermined adjusted position that accounts for the expected magnetic field effect, so that when the imaging module is assembled with the magnetic-field generating unit, the lens group automatically achieves the correct reference position without requiring additional compensation mechanisms.
Solution Approach 2:
The patent implements preliminary action by performing the position adjustment of the lens group during the manufacturing process before final assembly. The lens group is positioned and fixed at the adjusted position that anticipates the magnetic field effect, eliminating the need for post-assembly adjustments and enabling flexible component placement without compromising alignment precision.
2Manufacturing precision
If the imaging module is spaced apart from the magnetic-field generating unit to prevent magnetic field effects, then the lens group alignment is maintained, but the flexibility of component placement is reduced
Solution Approach 1:
The patent applies parameter changes by modifying the positional parameter of the lens group during manufacturing. Instead of maintaining the standard reference position, the lens group is positioned at a predetermined adjusted position that compensates for the magnetic field effect. This parameter modification enables the imaging module to be placed near the magnetic-field generating unit while maintaining accurate lens group alignment.
3Manufacturing precision
If the lens group is adjusted to the reference position during manufacturing, then the image resolution uniformity is ensured, but the tilt caused by magnetic fields during operation is not compensated
Solution Approach 1:
The patent applies preliminary anti-action by pre-compensating for the magnetic field-induced tilt during manufacturing. The lens group is positioned at an adjusted position that anticipates the magnetic field effect, so that when the imaging module is assembled and operated, the lens group automatically maintains the correct reference position and image resolution uniformity without additional tilt compensation mechanisms.
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 approach maintains image resolution uniformity by compensating for magnetic field-induced tilts, enhancing the flexibility of component placement in electronic devices and preventing lens group misalignment.
Implementation Method 1
an elastic support unit supporting the movable image-stabilizing unit such that the movable image-stabilizing unit is movable in a direction perpendicular to an optical axis of the lens group and tiltable around an axis perpendicular to the optical axis
Implementation Method 2
a magnetic member... The lens unit and the imaging device unit are fixed to each other in a state where, on a basis of a tilt amount and a tilt direction of the movable image-stabilizing unit acquired in advance in a state where the lens unit is installed in an electronic device including a magnetic-field generating unit
Data Source
AI summary
Provided are a method for manufacturing an imaging module and an imaging-module manufacturing device that can enhance the flexibility of disposition of components in an electronic device. An amount of tilt by which and a direction of tilt in which a movable image-stabilizing unit is tilted in a state where a lens unit is installed in the electronic device including a magnetic-field generating unit are acquired in advance. On the basis of the amount of tilt by which and the direction of tilt in which the movable image-stabilizing unit is tilted, acquired in advance, the lens unit and the imaging device unit are fixed to each other in the state where an optical axis of the lens group is tilted by the amount of tilt in a direction opposite to the direction of tilt from a first reference position perpendicular to an imaging surface of the imaging device.