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Ensinger PEI

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Schott NG12 Neutral Density Filter
Categories: Ceramic; Glass; Optical; Filter
Material Notes: Ionically colored glass. Data provided by the manufacturer, Schott Glas Mainz..

Similar glasses include NG3, NG4, NG5, NG9, NG10, NG11, NG 1
Key Words: DIN N0.89
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 2.34 g/cc
 
Chemical PropertiesOriginal ValueComments
Acid Class, SR 51.4
Alkali Class, AR 2
Stain Resistance Class, FR 4
 
Thermal PropertiesOriginal ValueComments
CTE, linear 5.90 µm/m-°C
@Temperature -30.0 - 70.0 °C
 6.40 µm/m-°C
@Temperature 20.0 - 300 °C
Transformation Temperature, Tg 460 °C
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.48
@Wavelength 1014 nm		Hg
 1.49
@Wavelength 587.6 nm		He
 1.50
@Wavelength 404.7 nm		Hg
Transmission, Visible 89 %
@Wavelength 460 - 700 nm		Internal transmittance of 95-96% from 430-700 nm.
IR Transmittance 86 %
@Wavelength 1400 - 2300 nm		Internal transmittance of 92-93% from 1400-2300 nm.
UV Transmittance <= 1.0 %
@Wavelength 200 - 310 nm
 86 %
@Wavelength 390 nm		Internal transmittance of 93% at 390 nm
Reflection Coefficient, Visible (0-1) 0.93
@Wavelength 587.6 nm		Reflection Factor P

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CSGT62 / 2051

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