Camera Module Lens Driving Device Preload Control
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Solution Overview
Problem
Existing lens driving devices for camera modules require complex manufacturing processes and high costs due to the need for multiple components and precise adjustments for tilt control, which complicates their production and increases expenses.
Innovation Solution
A camera module and lens driving device design where a preload control part, including an actuator, forms part of the housing, allowing for controlled preload and tilt adjustments using a spring and piezoelectric actuator, simplifying the manufacturing process and reducing costs by integrating the preload control directly into the housing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional lens driving devices use separate components for actuator and housing, then precise tilt control is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent integrates the actuator and housing into a unified structure where the actuator forms part of the housing itself. Specifically, the actuator housing serves dual functions as both the actuator component and part of the overall housing structure, eliminating the need for separate components and reducing manufacturing complexity while maintaining tilt control precision.
Solution Approach 2:
The actuator housing is designed to perform multiple functions: it houses the actuator mechanism, provides structural support as part of the housing, and enables tilt control. This multi-functional design reduces the total number of components needed and simplifies the manufacturing process while preserving the precision tilt control capability.
2Manufacturing precision
If multiple separate components are used for actuator and housing, then precise preload control is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines the actuator housing with the preload control mechanism into a single integrated structure. The actuator housing includes features that directly provide preload control functionality, eliminating the need for separate preload control components and reducing manufacturing costs while maintaining precision.
3Strength
If traditional lens driving devices use separate actuator and housing components, then adequate support is provided, but assembly complexity increases
Solution Approach 1:
By integrating the actuator housing as part of the overall housing structure, the patent provides structural support through the unified design. The actuator housing serves as both a functional component and a structural element, reducing the number of parts that need to be assembled while maintaining adequate structural support.
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 simplifies the manufacturing process, reduces costs, and allows for precise control of preload and tilt, enhancing the camera module's functionality and image quality by facilitating easier assembly and adjustment of the lens barrel.
Implementation Method 1
an actuator driving the lens barrel through the opening; where the actuator includes a piezoelectric device
Implementation Method 2
a spring contacting the housing and controlling the preload
Data Source
AI summary
There is provided a camera module. The camera module includes: a lens barrel including at least one lens; a housing receiving the lens barrel and having an opening in one surface thereof; an actuator driving the lens barrel through the opening; and a preload control part receiving the actuator therein and forming one surface of the housing by being coupled to the opening such that preload generated from the lens barrel and the actuator is controlled.