Coated Quartz Glass Plates with Antireflection Coating (AR)

Description

Quartz Glass Plates with Antireflection Coating (AR)

Quartz glass plates, like other glass such as K9 and sapphire glass, can also be coated to make its applications wider. Antireflection Coating (AR) is one type of coating. Antireflection Coating (AR) is a functional thin film that can significantly improve transmittance and clarity, while reducing reflected light and glare, improving visual effects. It is further optimized on the basis of ordinary optical anti reflective films. It also has another advantage of being smooth and free from fingerprints, providing a good tactile sensation when used.

The main characteristics of quartz glass

1. Heat resistance

The softening point of quartz glass is 1730 ℃. It can be used for a long time below 1100 ℃, and the temperature for short time use is up to 1450 ℃.

2. Light transmission

Quartz glass has good light transmittance in the entire optical spectrum from ultraviolet to infrared, and the visible light transmittance is more than 93%, especially in the ultraviolet spectral region, the maximum transmittance can reach more than 80%.

3. Electrical insulation

The electrical resistance of quartz glass is equivalent to 10,000 times that of ordinary glass.

4. Chemical stability

Quartz glass almost don’t react chemically with other acid-base substances except hydrofluoric acid.

5. Thermal stability

Quartz glass has low expansion coefficient, and it can withstand drastic temperature changes.

6. Hardness characteristics

With the hardness of Mohs level 7, the mechanical properties of quartz glass are better than hard glass and ceramics, and the strength of quartz glass improves with the increase of temperature, reaching its maximum when approaching the annealing temperature.