Custom SCHOTT D263T Down-draw Process Borosilicate Glass

High-Precision Thin Glass for Optical Coatings and Solar-Stable Applications
SCHOTT D263T is a high-performance borosilicate glass manufactured using the down-draw process, resulting in ultra-smooth surfaces, exceptional flatness, and superior thickness uniformity. Engineered for demanding optical and electronic applications, D263T offers outstanding thermal, chemical, and UV stability, making it an ideal substrate for coated glass applications exposed to sunlight or heat.

Key Features of SCHOTT D263T

• Manufacturing Process: Down-draw method for superior surface quality without post-polishing

• Material Type: Alkali-free borosilicate glass

• Thermal Stability: Excellent performance under temperature changes and long-term solar exposure

• Surface Quality: Optical-grade surface roughness (<1 nm RMS) suitable for direct coating

• High Transmission: Excellent transparency in visible and near-UV range

• Thickness Range: 0.1 mm to 1.1 mm available (custom slicing optional)

• Chemical Resistance: Resistant to moisture, acids, and cleaning agents used in optical coating workflows

• RoHS & REACH Compliant: Free of heavy metals (eco-friendly for medical and consumer electronics)

Customization & Processing Services

We provide precision fabrication and processing of SCHOTT D263T glass substrates for coated applications:

• Available Sizes: Custom-cut from standard mother sheets (1150×850 mm, 1300×1100 mm)

• Shape Options: Square, round, notched, or irregular custom geometries

• Coating Support: ITO, AR, dielectric mirrors, UV/IR filters, bandpass coatings

• Edge Finishing: Polished, laser-cut, or chamfered for device integration

• Flatness and TTV: Controlled to support high-performance optical coatings

• Surface Cleaning & Packaging: ISO-standard cleanroom handling and protective box packaging

Applications

• Display Technology – base substrate for anti-reflective and conductive coatings

• Biomedical Optics – UV-stable coated windows for diagnostics and lab instrumentation

• Photonic Devices – optical filters and mirrors for integrated light management

• Solar Control Coatings – filters, smart windows, and sun-stable glass laminates

• Semiconductor Packaging – optically coated glass interposers or lids