Camera Module Support Base with Metal Frame and Sandwiched Filter
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Solution Overview
Problem
Camera modules with plastic support bases have low structural strength and are prone to optical filter contamination during adhesion, affecting imaging quality.
Innovation Solution
A camera module design featuring a support base composed of a plastic platform bonded with a metal frame, where the optical filter is sandwiched between them, enhancing structural strength and preventing contamination through an insert molding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical filter is adhered to the plastic support base through adhesives, then the optical filter can be fixed in position, but the optical filter is easy to be dirtied in the adhesion process, affecting imaging quality
Solution Approach 1:
The patent introduces a metal frame as an intermediary component between the optical filter and the plastic support base. The optical filter is first adhered to the metal frame in a separate cleaning environment, then the entire assembly is mounted on the plastic support base. This intermediary structure allows the optical filter to be fixed without direct contact with adhesives in the final assembly location, preventing contamination.
Solution Approach 2:
The support structure is segmented into two distinct parts: a metal frame for holding the optical filter and a plastic support base for structural support. This segmentation allows each component to be optimized for its specific function - the metal frame provides a clean, precise mounting surface for the optical filter, while the plastic base provides overall structural support.
2Ease of manufacture
If the support base is made of plastic material, then the manufacturing cost is reduced and ease of manufacture is improved, but the structural strength is low and the support base is easy to lose its supporting function
Solution Approach 1:
The patent creates a composite structure combining metal and plastic materials. The metal frame provides high structural strength and precision for mounting the optical filter, while the plastic support base provides cost-effective mass production capabilities and overall structural support. This composite approach allows the system to achieve both ease of manufacture and high structural strength.
Solution Approach 2:
The patent merges the functions of support and mounting into a unified structure where the metal frame is integrated with the plastic support base. The metal frame serves as both the mounting structure for the optical filter and a reinforcement element for the plastic base, combining precision mounting functionality with structural support in a single integrated assembly.
3Strength
If additional adhesives are used to fix the optical filter, then the fixation strength is improved, but the complexity of the device increases and the imaging quality may be affected by adhesive contamination
Solution Approach 1:
The metal frame acts as an intermediary that consolidates the adhesion process into a single pre-assembled unit. The optical filter is adhered to the metal frame once in a controlled environment, creating a pre-assembled sub-assembly that requires no additional adhesives during final installation. This reduces both the number of adhesive applications needed and the risk of contamination.
Solution Approach 2:
The optical filter is pre-adhered to the metal frame in advance, before the final assembly with the plastic support base. This preliminary action allows the adhesion process to be performed in an optimized, controlled manner, ensuring proper fixation strength while preventing contamination that would occur if adhesion were performed during final assembly.
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 provides a robust support base that maintains imaging quality by preventing optical filter contamination and reducing the camera module's horizontal size, while ensuring the optical filter does not require additional adhesives for fixation.
Implementation Method 1
the plastic platform, the metal frame and the optical filter are bonded together through an insert molding process
Implementation Method 2
The optical filter is sandwiched between the plastic platform and the metal frame
Data Source
AI summary
A camera module includes a support base, an optical filter and a lens assembly. The lens assembly is installed on the support base. The support base includes a plastic platform and a metal frame. The metal frame is bonded to the plastic platform. The optical filter is sandwiched between the plastic platform and the metal frame. The present invention further involves a mobile terminal. The support base is formed by bonding the plastic platform to the metal frame and bonding the optical filter between the plastic platform and the metal frame. The metal frame embedded in the plastic platform can greatly increase the strength of the support base, and besides, the optical filter is fixedly sandwiched between the plastic platform and the metal frame without needing to further fix the optical filter by using adhesives, preventing the optical filter from becoming dirty in the process of fixing.