Haian Subei Optical Glass Factory

Haian Subei Optical Glass Factory

Coating Filter Glass Substrate Processing Specifications Surface Cleaning

2026 02/05

Coating Filter Glass Substrate Processing Specifications

Surface Cleaning

1.1mm thickness optical 532nm notch filter

Substrates must undergo ultrasonic cleaning (deionized water + solvent) to remove oil and particles, followed by plasma cleaning to activate the surface and enhance coating adhesion. If mold-inhibiting powder or corrosion layers remain on the substrate, pre-wipe with calcium carbonate powder.

Subei Optics specializes in Optical Colored filter glass,Coating Filter Glass,and Transparent Glass Windiow.

Baking Degassing

Prior to coating, substrates must be baked in a vacuum chamber at ≥300°C for ≥20 minutes to volatilize adsorbed gases, preventing film bubbling or delamination after coating.