Lens Module Uneven Bonding Surface Adhesive Strength
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Solution Overview
Problem
The miniaturization of camera modules results in limited bonding areas and strengths, leading to instability and reliability issues in the bonding structure of lens modules, affecting the overall imaging quality and product reliability.
Innovation Solution
The lens module incorporates uneven bonding surfaces with arrays of grooves and lugs on both the lens barrel and the lens, increasing the surface area and contact area with adhesive, enhancing the bonding strength and stability through a gluing structure that includes a tortuous second barrel wall and uneven bonding surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the camera module is miniaturized, then the size of the lens module is reduced, but the bonding area is limited and the bonding strength is very limited, making the bonding structure prone to fall off
Solution Approach 1:
The bonding surfaces are designed as uneven surfaces with arrays of grooves and lugs instead of flat surfaces. This curvature and irregularity increases the bonding area and mechanical interlocking between the lens and lens barrel, thereby enhancing bonding strength while maintaining miniaturization.
Solution Approach 2:
The bonding structure transitions from a two-dimensional flat surface to a three-dimensional uneven surface with grooves and lugs. This dimensional change significantly increases the bonding area and contact area with adhesive, improving bonding strength without increasing the overall size of the lens module.
2Volume of moving object
If the camera module is miniaturized, then the size of the lens module is reduced, but the bonding area is limited, leading to instability in the bonding structure
Solution Approach 1:
The uneven bonding surfaces with grooves and lugs provide mechanical interlocking and increased contact area, which enhances the stability of the bonding structure. The irregular surfaces prevent the lens from detaching while maintaining a compact design.
Solution Approach 2:
The bonding structure combines the lens, uneven bonding surfaces, and adhesive to form a composite gluing structure. This composite design enhances the overall stability and reliability of the bonding structure through the synergistic effect of different materials and surface features.
3Strength
If uneven bonding surfaces with grooves and lugs are used, then the bonding strength and stability are enhanced, but the device complexity increases
Solution Approach 1:
The uneven surfaces with grooves and lugs are formed directly on the bonding surfaces of the lens and lens barrel. While this increases bonding strength through enhanced mechanical interlocking, it also introduces manufacturing complexity in creating the precise groove and lug patterns.
Solution Approach 2:
The bonding surfaces are segmented into multiple grooves and lugs rather than being continuous. This segmentation increases the bonding area and mechanical interlocking, but also increases the manufacturing complexity of creating and aligning these segmented features.
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 significantly improves the bonding strength and stability of the lens module, enhancing the reliability and imaging quality by ensuring a secure attachment of the lens within the barrel, even in miniaturized formats.
Implementation Method 1
a first bonding surface (101F) is further arranged on the lens barrel (101), the first lens (102) is also provided with a second bonding surface (1021) that is glued with the first bonding surface by adhesive (1010)
Data Source
AI summary
A lens module includes a lens barrel having a first bonding surface; a first lens received in the lens barrel and having a second bonding surface which is a side surface of the first lens. At least one of the first bonding surface and the second surface is uneven, and the first bonding surface and the second surface are glued by adhesive. The first bonding surface and the second surface and the adhesive form a gluing structure.