Lens Driving Mechanism Positioning Components for Optical Alignment
Solution Overview
Problem
Current mobile device optical element driving modules face issues with tilting during assembly, leading to blurry images due to production and assembly tolerances, with active alignment being a costly and complex solution.
Innovation Solution
Incorporating at least three positioning components between the sensor module and the holder assembly, which are integrally formed with the holder assembly or base, and a filter between the holder assembly and sensor module, to enhance parallelism and accuracy, using metal materials for improved stability and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If active alignment process is used to solve tilting problem, then image clarity is improved, but manufacturing cost and process complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-forming positioning components (such as positioning protrusions or positioning holes) directly on the holder assembly or base during the molding process. This preliminary structuring enables automatic positioning of the optical element and sensor module during assembly, eliminating the need for complex active alignment processes while maintaining high image clarity and reducing manufacturing costs.
2Ease of manufacture
If face-to-face contact assembly is used between holder assembly and sensor module, then assembly simplicity is improved, but manufacturing precision deteriorates due to tilting
Solution Approach 1:
The patent introduces positioning components as intermediary elements between the holder assembly and sensor module. These positioning components (protrusions or holes) act as mediators that guide and constrain the relative positioning of the two modules during assembly. This intermediary mechanism maintains assembly simplicity while significantly improving parallelism accuracy and preventing tilting, as the positioning components automatically ensure proper alignment during the face-to-face contact assembly process.
Data Source
AI summary
A driving module is provided. The driving module includes a sensor module, a holder and at least three positioning components. The holder corresponds to the sensor module and is for holding an optical element. The positioning components are disposed between the sensor module and the holder.