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Schott BG40 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 2.67 g/cc
0.0965 lb/in³
Thermal Properties Metric English Comments
CTE, linear 11.9 µm/m-°C

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

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

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

@Temperature 68.0 - 572 °F
Transformation Temperature, Tg 305 °C
581 °F
Optical Properties Metric English Comments
Refractive Index 1.53

@Wavelength 587.6 nm
 1.53

@Wavelength 587.6 nm
 He
1.54

@Wavelength 404.7 nm
 1.54

@Wavelength 404.7 nm
 Hg
Transmission, Visible 15 %

@Wavelength 690 nm
 15 %

@Wavelength 690 nm
90 %

@Wavelength 450 - 530 nm
 90 %

@Wavelength 450 - 530 nm
 Internal transmittance of 98% at 450-530 nm
IR Transmittance 75 %

@Wavelength 2100 nm
 75 %

@Wavelength 2100 nm
 Internal transmittance of 81% at 2100 nm.
UV Transmittance <= 2.0 %

@Wavelength 200 - 310 nm
 <= 2.0 %

@Wavelength 200 - 310 nm
88 %

@Wavelength 390 nm
 88 %

@Wavelength 390 nm
 Internal transmittance of 95% at 390 nm
Reflection Coefficient, Visible (0-1) 0.92
0.92
Chemical Properties Metric English Comments
Acid Class, SR 5.1
5.1
Alkali Class, AR 3
3
Stain Resistance Class, FR 0.0
0.0
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