Autofocus Module Embedded Conductive Element
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Solution Overview
Problem
Conventional autofocus modules face issues with unstable conduction performance, difficulty in forming conductive metal coatings, and exposure leading to oxidation and wear, which increases production costs and complexity.
Innovation Solution
An autofocus module design where a conductive element is embedded within the supporting base and electrically connected to both the electrical focusing element and an external power source, reducing component complexity and exposure, and formed through stamping and insert-molding to simplify manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive metal coating is applied on the external surface to connect electrical focusing element and sensor, then electrical connection is achieved, but the conduction performance is unstable and the coating is prone to oxidation and wear
Solution Approach 1:
The patent extracts the conductive element from the external surface and embeds it within the supporting base structure. This removes the exposed conductive surface that causes oxidation and wear, while maintaining the electrical connection function between the focusing element and sensor through internal embedding.
Solution Approach 2:
The conductive element is nested within the supporting base, with the base providing structural support and protection while the embedded conductive element maintains electrical connections. This nested configuration protects the conductive material from environmental exposure.
2Reliability
If conductive metal coating is exposed outside for electrical connection, then electrical connectivity is achieved, but the exposed metal coating oxidizes and wears out easily
Solution Approach 1:
The conductive element is extracted from external exposure and repositioned within the supporting base. This eliminates direct exposure to oxidizing environments while preserving the electrical connection pathway through the base structure.
Solution Approach 2:
The supporting base creates a protected environment around the conductive element, effectively isolating it from oxygen and moisture that cause oxidation. The base material acts as a barrier, providing an inert protective environment for the conductive component.
3Reliability
If conductive metal coating is applied on external surface, then electrical connection between components is achieved, but unnecessary contact and connection with other components occurs causing wear and peeling
Solution Approach 1:
The conductive element is extracted from external surfaces where unintended contacts occur and embedded within the supporting base. This repositioning eliminates unnecessary contact with other components while maintaining the required electrical connection function.
Solution Approach 2:
The supporting base acts as an intermediary structure that provides controlled electrical connection pathways. Instead of direct external contact between conductive elements and other components, the base mediates the connection, reducing unwanted interactions.
Data Source
AI summary
The present invention provides an autofocus module including: a supporting base, an electrical focusing element and an conductive element, wherein the supporting base at least accommodates one lens element, the electrical focusing element is disposed at one end of the supporting base so that the electrical focusing element and the lens element are positioned along a common optical lens, and the conductive element is embedded in the supporting base and connected to the electrical focusing element and an external power source respectively. The electrical focusing element obtains power through the conductive element, and by controlling the power magnitude supplied to the electrical focusing element, the focal length thereof can be changed accordingly, thereby carrying out the autofocus operation.