Metal Bracket Lens Base for Camera Module Miniaturization
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Solution Overview
Problem
The existing camera modules in mobile phones face challenges in miniaturization due to the need for increased size of the plastic lens base to meet strength requirements, which hinders the reduction in device size and introduces issues with heat dissipation and electromagnetic interference.
Innovation Solution
A camera module design featuring a metal bracket with a cover plate and side plates forming a receiving groove, where the lens assembly is positioned, providing enhanced strength, heat dissipation, and electromagnetic shielding, while also using insert molding for the lens holder and adhesive films for sealing and bonding, thereby reducing the overall size and improving durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lens base is made of plastic, then the manufacturing cost is reduced, but the size needs to increase to meet strength requirements
Solution Approach 1:
The patent applies composite materials by combining metal (bracket) and plastic (lens holder) materials. The metal bracket provides structural strength and rigidity, allowing miniaturization, while the plastic lens holder provides cost-effective manufacturing and optical functionality. This composite structure resolves the contradiction between using plastic for low cost and increasing size for strength.
2Strength
If the lens base size is increased, then the strength requirement is met, but the miniaturization of the mobile phone is hindered
Solution Approach 1:
The metal bracket provides high strength and rigidity in a compact form, enabling the camera module to be miniaturized while meeting strength requirements. The plastic lens holder is optimized to work within the compact metal structure, eliminating the need for a larger plastic base.
3Device complexity
If plastic material is used for the lens base, then the heat dissipation performance is poor, but the device structure is simpler
Solution Approach 1:
The metal bracket serves as an efficient heat dissipation structure due to its high thermal conductivity, while the plastic lens holder maintains structural simplicity and optical functionality. The composite design allows heat to be effectively dissipated through the metal bracket without complicating the overall structure.
4Ease of manufacture
If plastic material is used for the lens base, then the electromagnetic shielding is insufficient, but the manufacturing process is simpler
Solution Approach 1:
The metal bracket provides electromagnetic shielding due to its conductive properties, protecting sensitive camera components from electromagnetic interference. The plastic lens holder maintains manufacturing simplicity and optical functionality. This composite approach achieves electromagnetic shielding without significantly complicating the manufacturing process.
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 metal bracket enhances the camera module's strength and reduces its size, improves heat dissipation, and provides electromagnetic shielding, leading to increased service life and reduced interference, while maintaining the structural integrity and functionality of the camera module.
Implementation Method 1
the metal bracket 51 dissipate heat generated by the sensor 20 and the circuit board 10 to an outside environment
Implementation Method 2
the metal bracket 51 has an electromagnetic shielding function, thus reducing interference of external electromagnetic signals
Implementation Method 3
a plurality of adhesive films are disposed in the camera module 100. The adhesive films are used for bonding between components in the camera module 100
Data Source
AI summary
A lens base with improved strength and reduced size includes a bracket and a lens holder connected to the bracket. The bracket includes a cover plate and a side plate, the side plate connects to the cover plate to form a receiving groove, the cover plate defines a first aperture, the first aperture penetrates the cover plate. The lens holder faces away from the receiving groove, the lens holder defines a second aperture, the second aperture faces the first aperture.