Curable Lens Composition Balancing Chromatic Aberration and Light Resistance
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Solution Overview
Problem
Optical members used in imaging modules face challenges with miniaturization, leading to chromatic aberration and decreased light resistance when exposed to outdoor light irradiation environments.
Innovation Solution
A curable composition containing a polymerizable compound with a nitrogen-containing fused aromatic ring and an acylphosphine oxide photopolymerization initiator, combined with an amine compound, to enhance light resistance and suppress coloring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a curable composition contains a monomer having a nitrogen-containing fused aromatic ring with specific structure to correct chromatic aberration, then the Abbe number and partial dispersion ratios are improved, but the cured substance exhibits coloring and decreased light resistance when stored in light irradiation environment
Solution Approach 1:
The patent introduces a specific amine compound as an intermediary substance that mediates between the nitrogen-containing fused aromatic ring monomer and the harmful light irradiation environment. This amine compound acts as a protective agent that prevents the monomer from undergoing photodegradation and coloring reactions, thereby maintaining light resistance while preserving the chromatic aberration correction benefits
Solution Approach 2:
The patent modifies the chemical parameters of the curable composition by carefully selecting and adjusting the structure and concentration of the amine compound. By changing these parameters, the patent optimizes both the optical properties (Abbe number, dispersion ratios) and the light resistance of the cured substance, preventing coloring while maintaining chromatic aberration correction
2Reliability
If glass materials are used for optical members to achieve excellent optical characteristics and environmental resistance, then optical performance is improved, but weight and size cannot be reduced and workability is poor
Solution Approach 1:
The patent changes the material parameters from glass to resin-based curable composition, fundamentally altering the material density and weight characteristics. By optimizing the chemical composition of the curable composition (monomer ratios, additives), the patent achieves glass-like optical characteristics and environmental resistance while significantly reducing weight and improving workability
Solution Approach 2:
The patent creates a composite material system combining multiple components: nitrogen-containing fused aromatic ring monomers, specific amine compounds, and other additives. This composite approach allows the material to simultaneously achieve low weight, excellent optical characteristics, and environmental resistance, overcoming the limitations of traditional glass materials
3Volume of moving object
If optical members are miniaturized to reduce size for imaging modules, then device compactness is improved, but chromatic aberration occurs
Solution Approach 1:
The patent changes the optical parameters of the lens material by using a curable composition with specifically designed nitrogen-containing fused aromatic ring structures. These structural modifications to the molecular level enable the material to have optimized dispersion characteristics that correct chromatic aberration even in miniaturized optical members
Solution Approach 2:
The patent employs a composite material approach by combining multiple functional components in the curable composition: chromatic aberration correction monomers, light resistance promoters, and other functional additives. This composite formulation enables miniaturized optical members to achieve both compact size and superior optical performance without chromatic aberration
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 cured substance exhibits excellent light resistance, maintaining transmittance even after prolonged exposure to outdoor light, thus addressing chromatic aberration and durability issues.
Implementation Method 1
a component B which is an acylphosphine oxide photopolymerization initiator
Data Source
AI summary
Provided is a curable composition containing a polymerizable compound represented by General Formula (A), an acylphosphine oxide photopolymerization initiator, and an amine compound.ArL-Sp-Pol)n Genera Formula (A)Ar represents an n-valent group containing a nitrogen-containing fused aromatic ring satisfying all items (i) to (iii), as a partial structure.(i) The nitrogen-containing fused aromatic ring has a fused ring structure in which two or more 6-membered rings are fused.(ii) The nitrogen-containing fused aromatic ring has at least one nitrogen atom as a ring-constituting atom.(iii) All ring-constituting atoms have p-orbitals, and all the p-orbitals contribute to aromaticity.L and Sp each independently represent a single bond or a divalent linking group, Pol represents a hydrogen atom or a polymerizable group, and n represents 1 or 2. The polymerizable compound represented by General Formula (A) contains at least one polymerizable group.