Schott BG3 Band Pass Filter

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Schott BG3 Band Pass Filter
Categories:	Ceramic; Glass; Optical; Filter
Material Notes:	Ionically colored glass. Data provided by the manufacturer, Schott Glas Mainz.
Key Words:	DIN BP 368/185
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Physical Properties	Metric	English	Comments

Density	2.56 g/cc	0.0925 lb/in³

Chemical Properties	Metric	English	Comments
Acid Class, SR	1	1
Alkali Class, AR	1	1
Stain Resistance Class, FR	0.0	0.0

Thermal Properties	Metric	English	Comments
CTE, linear	8.80 µm/m-°C @Temperature -30.0 - 70.0 °C	4.89 µin/in-°F @Temperature -22.0 - 158 °F
	10.2 µm/m-°C @Temperature 20.0 - 300 °C	5.67 µin/in-°F @Temperature 68.0 - 572 °F
Transformation Temperature, Tg	478 °C	892 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.50 @Wavelength 1014 nm	1.50 @Wavelength 1014 nm	Hg
	1.51 @Wavelength 587.6 nm	1.51 @Wavelength 587.6 nm	He
	1.52 @Wavelength 435.8 nm	1.52 @Wavelength 435.8 nm	Hg
	1.55 @Wavelength 302.1 nm	1.55 @Wavelength 302.1 nm	Hg
Transmission, Visible	<= 1.0 % @Wavelength 510 - 6801 nm	<= 1.0 % @Wavelength 510 - 6801 nm
	87 % @Wavelength 400 nm	87 % @Wavelength 400 nm	Internal transmittance of 95% at 400 nm
IR Transmittance	91 % @Wavelength 750 - 900 nm	91 % @Wavelength 750 - 900 nm	Internal transmittance of 99% from 750-900 nm.
UV Transmittance	<= 0.0060 % @Wavelength 200 - 250 nm	<= 0.0060 % @Wavelength 200 - 250 nm
	91 % @Wavelength 340 - 370 nm	91 % @Wavelength 340 - 370 nm	Internal transmittance of 99% from 340-370 nm
Reflection Coefficient, Visible (0-1)	0.92 @Wavelength 587.6 nm	0.92 @Wavelength 587.6 nm	Reflection Factor P

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CSGT01 / 1990

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