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Schott BG4 Band Pass Filter

Category Ceramic , Glass , Filter , Optical
Manufacturer Schott Glas Mainz
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Ionically colored glass. Data provided by the manufacturer, Schott Glas Mainz.
Physical Properties Metric English Comments
Density 2.66 g/cc
0.0961 lb/in³
Thermal Properties Metric English Comments
CTE, linear 7.70 µm/m-°C

@Temperature -30.0 - 70.0 °C
 4.28 µin/in-°F

@Temperature -22.0 - 158 °F
9.00 µm/m-°C

@Temperature 20.0 - 300 °C
 5.00 µin/in-°F

@Temperature 68.0 - 572 °F
Transformation Temperature, Tg 536 °C
997 °F
Optical Properties Metric English Comments
Refractive Index 1.52

@Wavelength 1014 nm
 1.52

@Wavelength 1014 nm
 Hg
1.53

@Wavelength 587.6 nm
 1.53

@Wavelength 587.6 nm
 He
1.54

@Wavelength 435.8 nm
 1.54

@Wavelength 435.8 nm
 Hg
1.57

@Wavelength 302.1 nm
 1.57

@Wavelength 302.1 nm
 Hg
Transmission, Visible <= 1.0 %

@Wavelength 490 - 690 nm
 <= 1.0 %

@Wavelength 490 - 690 nm
87 %

@Wavelength 400 nm
 87 %

@Wavelength 400 nm
 Internal transmittance of 95% at 400 nm
IR Transmittance 91 %

@Wavelength 760 - 800 nm
 91 %

@Wavelength 760 - 800 nm
 Internal transmittance of 99% from 760-800 nm.
UV Transmittance <= 0.020 %

@Wavelength 200 - 270 nm
 <= 0.020 %

@Wavelength 200 - 270 nm
91 %

@Wavelength 340 - 380 nm
 91 %

@Wavelength 340 - 380 nm
 Internal transmittance of 99% from 340-380 nm
Reflection Coefficient, Visible (0-1) 0.92
0.92
Chemical Properties Metric English Comments
Acid Class, SR 1
1
Alkali Class, AR 1
1
Stain Resistance Class, FR 0.0
0.0
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