Porous Ceramic Lens Frame Adhesive Fixation
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Solution Overview
Problem
Existing lens assemblies in vehicles face challenges in maintaining optical performance due to lens movement caused by vibrations and shocks, and existing adhesive fixation methods complicate the structure and assembly process while potentially affecting optical performance.
Innovation Solution
A lens frame with a porous structure featuring a concave section for adhesive injection, which allows the adhesive to pass through pores and securely fix the lens without forming holes that could affect optical performance, ensuring the lens remains fixed during vehicle movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lenses and spacing rings are inserted into the lens barrel and fixed with a pressing ring, then the lens assembly can be assembled, but the lenses and spacing rings may move due to vibrations and shocks during vehicle operation
Solution Approach 1:
The lens frame is made of porous ceramic material with controlled porosity (10-40%), which allows adhesive to penetrate into the porous structure and form strong mechanical interlocking bonds with the optical members, preventing movement during vehicle operation while maintaining the structural integrity of the lens frame
Solution Approach 2:
The pressing ring mechanical fixation system is replaced with an adhesive bonding system. The adhesive is injected into the hollow part of the lens frame and bonds optical members to the inner wall, eliminating the need for mechanical pressing structures and providing more reliable vibration resistance
2Ease of manufacture
If adhesive is injected through holes in the lens frame to fix lenses, then the assembly process is simplified, but holes may affect optical performance
Solution Approach 1:
Instead of creating holes through the lens frame, the invention utilizes the porous ceramic material's inherent porosity. Adhesive is injected into the hollow part and penetrates through the porous walls to reach and bond with optical members, achieving fixation without compromising optical paths
Solution Approach 2:
The harmful element (holes affecting optical performance) is extracted from the design. The adhesive injection system is modified to inject adhesive into the hollow part rather than through holes, eliminating the harmful effect while maintaining the beneficial assembly simplicity
3Reliability
If a pressing ring is used to fix optical members, then the structure can be assembled, but the structure becomes more complex and assembly more difficult
Solution Approach 1:
The pressing ring component is completely extracted from the lens frame structure. The fixation function is achieved through adhesive bonding within the hollow part, eliminating the need for additional mechanical components and simplifying the overall structure
Solution Approach 2:
The hollow part of the lens frame serves multiple functions: it provides structural support, acts as a reservoir for adhesive injection, and enables bonding surfaces for optical members. This multi-functionality replaces the need for separate pressing ring components
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 effectively maintains predetermined optical performance by preventing lens movement during vehicle vibrations and shocks, while simplifying the assembly process by eliminating the need for external holes, thus ensuring stable and undisturbed optical performance.
Implementation Method 1
a concave section into which an adhesive for fixing the optical member inserted into the hollow part is injected
Implementation Method 2
the lens frame has a porous structure
Data Source
AI summary
A lens assembly made of porous ceramic is provided with concave sections into which an adhesive for fixing lenses inserted into a lens frame is injected. Each of the concave sections has an outward opening and a spacing wall provided between a hollow part of the lens frame and the opening. The adhesive injected into the concave sections passes through multiple pores in the lens frame made of porous ceramic, and reaches the periphery of each of the lenses, thereby fixing the lenses to an inner wall of the hollow part of the lens frame.