Borosilicate Windows - Plates - Substrates

UQG custom Borosilicate windows range includes two main finishes - plate finish or optically polished. We mainly supply Borofloat Borosilicate cut and ground from sheet. This can then be worked into a guaranteed optical polished surface to optical specifications or dimensional tolerances.

Borosilicate has low coefficient of expansion with good resistance to water, acid and Saline Solutions. It has good thermal properties withstanding temperatures over lengthy periods of time.

Other grades and types of Borosilicate materials are supplied including Pyrex and ultra thin glass Borosilicate glass substrates below 1mm in thickness.

We hold extensive stocks of standard thicknesses supplying small and production quantities

Specifications – Standard   Material: Borosilicate Optically polished Diameter Tolerance: +0.00/-0.20mm Thickness Tolerance: ± 0.10mm Edges: Fine Ground Flatness: ≤ 5 fringes Parallelism: ≤ 3 arc minutes.   Custom Sizes & Options Diameters: 4mm to 200mm Squares/Rectangles: 1mm to 165mm Thickness: 0.10 to 21mm Diameters/Thickness: Tol. to 0.02mm Edges: As cut/bevelled, ground or polished Parallelism: Up to 10 seconds Flatness: Up to Lambda 10 Coatings: See coatings section

Specifications – Standard   Material: Borosilicate Borofloat ® Plate Diameter: ± 0.20mm Thickness: ± 0.20mm Edges: Ø Ground, squares as cut/bevelled Flatness: 10 Fringes Per 25mm2   Custom Sizes & Options Diameters: 4mm to 500mm Squares/Rectangles: 3mm to 500mm Thickness: 0.70 to 21mm Diameters/Thickness: To 0.02mm Edges: As cut/bevelled, ground or polished Parallelism: Up to 10 seconds Flatness: Up to Lambda 10 Coatings: See coating section

Please send us your requirements or for further information please contact us.