隱形眼鏡最高幾度

You're asking about the highest refractive index of invisible glasses.

The refractive index is a measure of how much light is bent as it passes through an optical material. In general, higher refractive indices are associated with more extreme magnification or correction of aberrations (distortions) in the image.

For invisible glasses (i.e., glasses that have no visible color), the highest refractive index is typically around 1.9 to 2.0. This means that the light passing through these glasses will be bent by about 1.9 to 2 times its original angle, depending on the material and design of the lenses.

Here are some examples of common materials used in invisible glasses with their corresponding refractive indices:

• Polycarbonate (PC): around 1.5
• Trivex: around 1.6-1.7
• High-index plastic (HIPP): around 1.7-1.9
• Aspheric glass: around 1.8-2.0

Please note that these values are approximate and can vary depending on the specific material and manufacturing process used.

In summary, invisible glasses with refractive indices above 1.9 to 2.0 typically require more advanced materials and technologies to achieve, as they need to correct more significant aberrations in the image.