Schott and Hoya colored glass filters are widely used for order sorting, light attenuation, and spectral selection of a broadband source.

25.4 mm diameter and 50.8 mm square colored glass filters are available individually or in a set of twelve. The set consists of one of each filter available packaged in a protective hardwood case. All filters are shipped with a transmission curve. For easy identification, the 25.4 mm diameter and 50.8 mm square filters are permanently labeled.

Specifications    Material  Schott and Hoya colored glass or equivalent  Clear Aperture  ³central 80% of dimensions  Surface Quality  60-40 scratch-dig  Dimensions  ±0.3 mm  Thickness  3.0 ±0.1 mm (2.0 ±0.1 mm for UG.11)  Wedge  £3 arc min  Chamfers  0.25–0.76 mm face width x 45° ±15°  Angle of Incidence  0°  Cleaning  Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended )  Damage Threshold  30 W/cm2 CW, typical For safe operation: (1) Do not exceed a 5 °C/min temperature rise; (2) Spread the beam over the entire surface of the filter; (3) Use a holder which minimizes thermal and mechanical stress; (4)Avoid high ozone environments.