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Difference between total luminous transmittance and haze — how to read optical resin transparency
Catalogs for transparent materials list two figures side by side: “total luminous transmittance” and “haze.” B […]
Basics
What is transparent resin? Properties by type and how to choose for optical applications
Transparent resin is a general term for plastics that transmit a high proportion of visible light. Application […]
What is Abbe number? From the basics of chromatic aberration to choosing optical materials
The Abbe number is a metric that expresses how much a lens material disperses light by wavelength. The larger […]
What Is Thermal Decomposition? Principles and Countermeasures for Optical Resins in Practice
Thermal decomposition is a chemical change in which a resin undergoes scission of its molecular chains at high […]
What Is Glass Transition Temperature (Tg)? A Key Index for Judging the Heat Resistance of Optical Resins
The glass transition temperature (Tg) is one of the most fundamental and important indicators in the heat-resi […]
What Is Birefringence? Causes of Image Degradation in Optical Resins and How to Address Them
Birefringence is a phenomenon in which the refractive index of a material differs depending on the polarizatio […]
What Is Coefficient of Thermal Expansion (CTE)? Thermal Expansion and Dimensional Design of Optical Resins
The coefficient of thermal expansion (CTE) is an indicator of a material’s dimensional change in respons […]
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