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 comprising units of Chemical Formulae 1 and 2, which include aryl and heteroaryl groups, is polymerized with polyester or polycarbonate precursors to enhance refractive index and transparency, while maintaining flexibility and heat resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the refractive index of an optical material is increased, then a thinner and lighter lens can be manufactured, but the Abbe's Number becomes low and transparency is reduced
Solution Approach 1:
The patent employs composite materials by combining multiple resin components with different molecular structures and optical properties. The resin composition includes polymers with aromatic rings and heteroatoms that collectively achieve both high refractive index and high Abbe's number, resolving the trade-off between lens thickness and transparency through material composition rather than single-component optimization
Solution Approach 2:
The patent systematically varies molecular parameters including aromatic ring content, heteroatom types and positions, molecular weight, and chain flexibility to independently tune optical properties. By changing these molecular parameters, the resin achieves a refractive index of 1.55-1.75 and Abbe's number of 30-55 simultaneously, enabling thin lens design without sacrificing transparency
2Length of moving object
If the refractive index of an optical material is increased, then a thinner and lighter lens can be manufactured, but the Abbe's Number becomes low
Solution Approach 1:
The resin composition combines multiple polymer components with complementary optical characteristics. By integrating materials with high refractive index contributions (aromatic structures) and high Abbe's number contributions (flexible chains, specific functional groups), the composite achieves both high refractive index (1.55-1.75) and high Abbe's number (30-55), eliminating the inverse relationship between these parameters
Solution Approach 2:
The patent introduces localized structural features within the polymer chain, such as specific aromatic ring placements, heteroatom positions, and side group configurations. These local structural qualities allow different regions of the molecular structure to contribute differently to optical properties, enabling simultaneous optimization of refractive index and Abbe's number through targeted molecular design
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 achieves a high refractive index and transparency, enabling the production of thinner optical lenses with improved optical characteristics and processing flexibility.
Implementation Method 1
The higher the refractive index of an optical material, the thinner the optical lens required to achieve the same level of correction. Accordingly, as the refractive index of the optical material is increased, a thinner and lighter lens can be manufactured
Implementation Method 2
for use as an optical material, a certain level or higher of transparency is required
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 in herein. In some embodiments, a resin includes a unit of Chemical Formula 1 and a unit of Chemical Formula 2:wherein, in Chemical Formulae 1 and 2, Ar1, Ar2, R1, r1, X1 to X4, X9, X10, Z1, Z2, Z5, La, La″, a, b, p, t, m, n, L11, l11, X11 to X16, Z11 to Z13, Lb, Lb′, a′, b′, p′, C″, m″ and n″ are defined herein.