Adjustable Camera Module with Preset Coil Charge for Tilt Compensation
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Solution Overview
Problem
Camera module assembly tolerances lead to tilts between the lens and the chip, affecting resolution, and existing alignment technologies like AA technology struggle to adjust for these tilts efficiently, especially when dynamic tilts occur during focusing.
Innovation Solution
An adjustable camera module with an adjustment coil group that presets electric charge quantities to align the optical lens sheet group with the photosensitive chip, reducing alignment difficulty and improving resolution by compensating for both static and dynamic tilts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If AA technology is used to align the lens with the photosensitive chip, then the alignment precision is improved, but the device complexity and production cost increase
Solution Approach 1:
The patent applies preliminary action by pre-setting the adjusting quantity of electric charge corresponding to different focus positions in advance. During production, the adjustment coil group is pre-configured with charge quantities that correspond to various focus positions, eliminating the need for complex real-time adjustments during assembly. This allows the lens to be aligned with the photosensitive chip without requiring complex AA technology processes.
Solution Approach 2:
The patent changes the parameter of electric charge quantity supplied to the adjustment coil group based on focus position. By presetting different charge quantities for different focus positions, the system can dynamically adjust the lens position without complex mechanical alignment processes. This parameter-based approach simplifies the alignment process while maintaining high precision.
2Manufacturing precision
If AA technology is used to adjust for assembly tilts, then the alignment is improved, but the production time and effort increase
Solution Approach 1:
The patent performs the adjustment work in advance by presetting the electric charge quantities during the production stage. The adjustment coil group is pre-configured with the correct charge quantities for different focus positions, so that during actual operation, no time-consuming adjustments are needed. This eliminates the time-consuming AA alignment process while maintaining alignment precision.
3Ease of manufacture
If the magnet position or coil position is not precisely controlled, then the manufacturing cost is reduced, but the lens experiences dynamic tilt during focusing
Solution Approach 1:
The patent applies self-service by using the adjustment coil group to automatically compensate for the dynamic tilt caused by magnet or coil position variations. The system self-corrects the lens tilt by supplying appropriate electric charge to the adjustment coil group, eliminating the need for precise mechanical positioning of magnets and coils. This allows easier manufacturing while maintaining lens stability through active compensation.
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
The solution reduces alignment complexity, lowers production requirements, shortens the production cycle, and enhances product yield by effectively adjusting for both static and dynamic tilts, thereby improving camera module resolution and performance.
Implementation Method 1
an adjustable actuator including a frame main body, an adjustment coil group, at least one magnet and a base; wherein the frame main body and the base are coupled to define an installation cavity, and the magnet, the optical lens sheet group and the adjustment coils are accommodated and fixed in the installation cavity
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
An adjustable camera module and an assembly test method therefor. The assembly test method for the adjustable camera module comprises: measuring a static tilt amount between the optical lens sheet group and the photosensitive assembly by performing a defocus curve test on the adjustable camera module; analyzing a static adjusting electric quantity of each adjustment coil of an adjustment coil group according to the static tilt amount; and burning the static adjusting electric quantity required by each adjustment coil so as to reduce process requirements.