Optical Lens Bonding via Dissolvable Micro-Structures
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Solution Overview
Problem
The existing methods for assembling optical lenses face challenges in ensuring consistent bonding strength between the lens barrel and the fixing ring due to smooth contact surfaces, leading to potential detachment and instability of the lens elements.
Innovation Solution
The implementation of micro-structures on the bonding surface of the lens barrel in a ring-shaped arrangement, which protrude and are dissolved by a solvent along with the fixing ring, enhances the bonding strength and consistency, utilizing the capillarity effect to facilitate thorough bonding and reduce the risk of tilt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If smooth contact surfaces are used between the lens barrel and fixing ring, then the fabrication process is simple, but the bonding strength is insufficient and the fixing ring may tilt or detach
Solution Approach 1:
The patent applies porous materials by forming micro-holes (through-holes or blind holes) in the fixing ring, creating a porous structure that enables solvent penetration. This porous design allows the solvent to reach the bonding interface effectively, dissolving both the fixing ring and lens barrel materials to form strong chemical bonds, thereby resolving the contradiction between fabrication simplicity and bonding strength.
Solution Approach 2:
The patent applies parameter changes by modifying the physical structure of the fixing ring from a solid smooth surface to one with micro-holes. This structural parameter change enables the solvent to penetrate and dissolve the materials at the bonding interface, transforming the bonding mechanism from surface adhesion to chemical dissolution bonding, thus achieving high bonding strength while maintaining relatively simple fabrication processes.
2Ease of manufacture
If smooth contact surfaces are used between the lens barrel and fixing ring, then the manufacturing process is simple, but the bonding consistency varies at different points
Solution Approach 1:
The porous structure with distributed micro-holes ensures uniform solvent distribution across the bonding interface. The solvent penetrates through multiple holes and reaches various points of the bonding surface consistently, dissolving the materials uniformly and creating consistent bonding strength across the entire interface, thereby resolving the bonding consistency issue.
Solution Approach 2:
The patent applies segmentation by dividing the continuous smooth surface into multiple discrete micro-holes distributed across the fixing ring. This segmentation allows the solvent to access multiple localized bonding points simultaneously, ensuring uniform dissolution and consistent bonding across the entire interface, while the overall structure remains relatively simple to manufacture.
3Reliability
If micro-structures with holes are added to the fixing ring, then the bonding strength and consistency are improved, but the fabrication complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the fixing ring structure to include micro-holes, which fundamentally changes how bonding occurs. The holes enable solvent penetration and chemical dissolution bonding, dramatically improving bonding strength. The complexity increase is offset by the effectiveness gain, as the hole formation processes (drilling, etching) are well-established manufacturing techniques.
Solution Approach 2:
The porous structure with micro-holes creates an efficient bonding mechanism where solvent can penetrate and dissolve materials at the interface. This porous design, while adding structural complexity, uses simple geometric features (circular holes) that are straightforward to manufacture using conventional methods, thus the complexity increase is manageable relative to the significant improvement in bonding reliability.
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 approach results in an optical lens with improved reliability and durability by ensuring stronger bonding between the lens barrel and the fixing ring, simplifying fabrication processes, reducing production costs, and maintaining consistent gaps, thereby preventing lens detachment.
Implementation Method 1
With the capillarity effect when the micro-structures are dissolved, the bonding surface and the fixing ring may be more thoroughly dissolved, so as to facilitate boding between the bonding surface and the fixing ring.
Data Source
AI summary
An optical lens including a lens barrel, a fixing ring, and at least one lens element is provided. A bonding surface is provided on an inner side of a periphery of an end of the lens barrel, and a plurality of micro-structures are disposed on the bonding surface in a ring-shaped arrangement. The micro-structures protrude from the bonding surface. The fixing ring is disposed inside the bonding surface of the lens barrel. The lens element is disposed inside the lens barrel. The micro-structures on the bonding surface and the fixing ring are dissolved by a solvent, so as to fix the lens element inside the lens barrel. An assembling method of the optical lens and a lens barrel are also provided.