Optical Lens Resin Composition for High Index and Transparency
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Solution Overview
Problem
Existing optical materials face a trade-off between high refractive index and Abbe's Number, limiting the development of thinner and lighter optical lenses with sufficient transparency.
Innovation Solution
A resin composition incorporating specific chemical structures (Chemical Formulae 1 and 2) to enhance electron density and molecular packing, combined with a polyester or polyester-carbonate resin, to achieve high refractive index and transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the refractive index of optical material is increased, then lens thickness is reduced, but Abbe's Number becomes low and transparency deteriorates
Solution Approach 1:
The patent employs composite resin structures combining multiple functional units: a first repeating unit with aromatic rings for high refractive index, a second repeating unit with fluorene or xanthene structures for molecular packing enhancement, and a third repeating unit with carbonate or carboxylate groups for transparency control. This multi-component composite approach allows simultaneous optimization of refractive index and transparency that cannot be achieved with single-material systems.
Solution Approach 2:
The patent systematically varies chemical parameters including the types of aromatic substituents (Ar1, Ar2), the number of fluorine atoms (r1), the structure of heteroaryl groups (L1, L2), and the ratio of different repeating units to precisely control the balance between refractive index and transparency. By adjusting these molecular parameters, the resin achieves optimal optical properties for thin lens applications.
2Weight of moving object
If the refractive index of optical material is increased, then lens weight is reduced, but Abbe's Number becomes low and optical quality deteriorates
Solution Approach 1:
The patent uses a composite resin system where the first repeating unit (with high electron-density aromatic groups) provides high refractive index for weight reduction, while the second repeating unit (with fluorene/xanthene and fluorine substitution) maintains molecular packing and optical quality. The synergistic combination of these different functional components resolves the trade-off between weight and optical quality.
Solution Approach 2:
Different regions of the polymer chain have specialized functions: segments with heavy aromatic substituents (Ar1, Ar2) localized to increase electron density and refractive index, while other segments with fluorine atoms and heteroaryl groups are positioned to control molecular packing and maintain transparency. This local functional differentiation allows simultaneous optimization of weight and optical quality.
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 resin composition results in optical lenses with improved refractive index and transparency, enabling thinner and lighter optical devices with enhanced optical properties.
Implementation Method 1
A resin composition incorporating specific chemical structures (Chemical Formulae 1 and 2) to enhance electron density and molecular packing
Implementation Method 2
A resin composition incorporating specific chemical structures (Chemical Formulae 1 and 2) to enhance electron density and molecular packing
Data Source
AI summary
A resin, a method for preparing the same, a resin composition including the same, and a molded article including the resin composition are disclosed herein. In some embodiments, the resin includes a unit of Chemical Formula 1 and a unit of Chemical Formula 2wherein, in Chemical Formulae 1 and 2, Ar1, Ar2, R1 to R3, r1 to r3, L1, L2, X1 to X10, X′9, X′10, Z1 to Z6, La, La′, La″, La′″, a, b, c, d, p, q, t, t′, m, n, m′ and n′ are defined herein.