Optical Lens Bonding via Silicone Interlayer
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Solution Overview
Problem
Existing optical lens systems require high technological effort for bonding, especially when dealing with plano-convex or plano-concave lenses, as surface deviations can lead to gaps affecting optical performance, and existing methods involve heating and direct gluing which is inefficient.
Innovation Solution
An optically transparent silicone surface body is used between the adhered surfaces of the lenses, with surface functionalization through chemically reactive groups activated by temperature and pressure, forming a solid connection that compensates for surface deviations without heating and using additional adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If lenses are directly bonded by pressing and heating to softening area, then firm bonding is achieved, but high technological effort and complex process are required
Solution Approach 1:
The patent introduces an optically transparent adhesive layer as an intermediary substance between the two lenses. This adhesive layer enables firm bonding of the lenses at lower temperatures without requiring heating to the softening area of glass, thereby simplifying the bonding process while maintaining strong connections. The adhesive mediator resolves the contradiction by achieving strong bonding without the complex high-temperature heating process.
2Ease of manufacture
If planar surfaces are directly bonded, then bonding is achieved, but surface deviations create gaps that affect optical performance
Solution Approach 1:
The patent changes the physical parameters of the bonding interface by introducing an adhesive layer with appropriate viscosity and flow characteristics. This adhesive layer can flow into and compensate for sub-micrometer gaps caused by surface deviations, then cures to form a solid bond. This parameter change allows simple direct bonding of planar surfaces while maintaining optical precision, resolving the contradiction between manufacturing simplicity and optical quality.
3Strength
If heating is used to bond glass lenses, then bonding is achieved, but additional energy consumption and thermal damage risk occur
Solution Approach 1:
The patent replaces the thermal bonding mechanism (heating to softening area) with a chemical bonding mechanism using an optically transparent adhesive. The adhesive bonds the lenses at much lower temperatures through chemical adhesion rather than thermal softening, dramatically reducing energy consumption while maintaining bonding strength. This substitution resolves the contradiction between bonding strength and energy efficiency.
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 method allows for simple, high-quality bonding of lenses with surface deviation compensation, reducing the need for heating and adhesives, and enabling the creation of complex optical lens systems like biconvex lenses without compromising optical clarity.
Implementation Method 1
the flexible silicone material of the transparent surface body
Implementation Method 2
surface functionalization by chemically reactive groups being generated on the surface that react to each other under the influence of temperature and pressure
Implementation Method 3
the surface functionalization may in particular comprise plasma activation or what is known as corona treatment
Implementation Method 4
the surface functionalization may in particular comprise plasma activation or what is known as corona treatment
Data Source
AI summary
An optical lens system is provided with at least two lenses firmly bonded to each other. A first lenshas a first adhered surface and a second lens has a second adhered surface. The adhered surfaces are at least indirectly firmly bonded to each other. An optically transparent surface body made of a silicone material is arranged between the adhered surfaces. The first adhered surface is firmly bonded to a first side and the second adhered surface is firmly bonded with the opposite second side of the sheet body by means of a bonding method.