SCHOTT NG3 405nm 50mm Sq., 2.0 OD ND Filter

Product Details Calibrated for Specific Wavelengths Optical Densities Ranging from 0.3 to 3.0 NG3, NG4, NG5, NG9, or NG11 Glass Types SCHOTT Calibrated Neutral Density (ND) Filters are tested and calibrated to a precision optical density tolerance at either 405nm, or 633nm, or 785nm. Manufactured from NG3, NG4, NG5, NG9, or NG11 SCHOTT Glass, the filters are ideal for providing precise attenuation at common laser wavelengths. Available in optical densities ranging from 0.3 to 3.0, these filters can be integrated into a variety of optical systems and experiments. SCHOTT Calibrated Neutral Density (ND) Filters are available in a standard 50 x 50mm size and multiple filters can be stacked to achieve custom optical densities. The measured OD value for each filter at the specified wavelength is referenced on the box. Note: Please contact us if your application requires a custom size SCHOTT Calibrated Neutral Density (ND) Filter. Specifications General Type of Filter: Absorptive ND Filter Type: Neutral Density Filter Physical & Mechanical Properties Dimensions (mm): 50.0 x 50.0 ±0.2 Clear Aperture CA (mm): 48.5 x 48.5 Thickness (mm): 1.72 (nominal) Parallelism (arcmin): ≤3 Edges: Fine Ground Bevel: 0.5 x 45° Shape of Back Surface: Plano Optical Properties Optical Density OD (Average): 2.0 ±0.066 at Calibrated Wavelength Design Wavelength DWL (nm): 405 Glass/Filter Number: SCHOTT NG3 Coating: Uncoated Surface Quality: 60-40 Transmission (%): 1 ±0.31 at Calibrated Wavelength Material Properties Transformation Temperature (°C): 462 Regulatory Compliance Certificate of Conformance: View ×