Optical Lens Curable Composition for Thin High-Adhesion Laminates
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Solution Overview
Problem
Existing plastic lenses have lower refractive indices and higher specific gravities compared to glass lenses, making them thicker and less desirable for eyeglass applications.
Innovation Solution
A curable composition comprising styrene compounds, fluorene group-containing compounds, and hydroxy group-containing (meth)acrylates is used to create a cured product with high adhesion to laminates, achieving a low specific gravity and high refractive index.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a plastic lens with high refractive index is used to reduce thickness, then the lens thickness is reduced, but the adhesion to functional laminates deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the curable composition by incorporating specific compounds (carboxyl group-containing compound, hydroxy group-containing compound, and amino group-containing compound) to achieve both high refractive index and high adhesion to laminates simultaneously
Solution Approach 2:
The patent creates a composite curable composition system that combines multiple functional compounds (styrene or styrene derivative, fluorene group-containing compound, carboxyl group-containing compound, hydroxy group-containing compound, and amino group-containing compound) to achieve properties that individual components cannot provide alone
2Illumination intensity
If glass lens is used to achieve high refractive index, then the refractive index is improved, but the specific gravity increases making the lens heavier
Solution Approach 1:
The patent changes the material composition parameters by using organic compounds (styrene, fluorene derivatives) instead of inorganic glass materials, achieving high refractive index while maintaining low specific gravity characteristic of plastic materials
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 composition produces a cured product with improved adhesion to functional layers on plastic lenses, reducing thickness while maintaining high refractive index and adhesion, suitable for eyeglasses.
Implementation Method 1
The plastic lens is produced, for example, by polymerizing a curable composition containing a fluorene compound, styrene or a styrene derivative, and a radical polymerization initiator
Implementation Method 2
a curable composition capable of producing a cured product having high adhesion to a laminate
Data Source
Figure 1~2
AI summary
The purpose of the present invention is to provide: a curable composition that can provide a cured body that exhibits high adhesiveness with laminates; a cured body from the curable composition; and an optical article, lens, and eyeglasses that contain the cured body. An embodiment of the present invention provides a curable composition. The curable composition comprises: at least one styrene compound selected from the group consisting of styrene and styrene derivatives; a fluorene group-containing compound represented by formula (I); and a hydroxyl group-containing (meth)acrylate. In formula (I), R33 and R34 are each independently a hydrogen atom or a methyl group.