What's AR glass?

The AR glass, which is short for anti reflection glass, mean the glass dramatically treated to cut the reflections down and boost light transmission. Base on a coating process, usually apply on single or double sides the peak transmission can meet 99%, while reflectivity rate reduce to below 1%. In contrast, the plain glass reflects about 4% of the light per side and around 8% in total across the visible spectrum.

Remember don't confuse AR glass and AG(anti glare) glass. The AR works through destructive inerference from thin film coatings. The AG relies on a rough surface to scatter light instead of improve the transmission.

How it works

The light reflect off a thin film undergoes a half wavelength phase shift. When the coating thickness under precious control, reflections from the coating's front surface and the glass surface cancel each other. Then the result is reflected light suppressed and transmitted light gets a boost. Both sides can be coated for maximum effect.

The coating applied via magnetron sputtering, build a transparent optical film at nanometer scale. It becomes essentially part of the glass itself - It doesn't alter the glass base properties but adds a hardening effect and bonds with exceptional adhesion.

Herewith a pratical comparison: At 555nm wavelength(human vison peaks), ultra clear glass lets through about 91.5% light. AR coated glass meets 99%. So it's the reason why displays with AR glass look noticeably more vividand color accurate.