Schott BG7 Band Pass Filter

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Schott BG7 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 466/182
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Physical Properties	Metric	English	Comments

Density	2.61 g/cc	0.0943 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	8.50 µm/m-°C @Temperature -30.0 - 70.0 °C	4.72 µin/in-°F @Temperature -22.0 - 158 °F
	9.90 µm/m-°C @Temperature 20.0 - 300 °C	5.50 µin/in-°F @Temperature 68.0 - 572 °F
Transformation Temperature, Tg	468 °C	874 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.52 @Wavelength 587.6 nm	1.52 @Wavelength 587.6 nm	He
	1.54 @Wavelength 404.7 nm	1.54 @Wavelength 404.7 nm	Hg
Transmission, Visible	<= 1.0 % @Wavelength 610 - 700 nm	<= 1.0 % @Wavelength 610 - 700 nm
	52 % @Wavelength 400 nm	52 % @Wavelength 400 nm	Internal transmittance of 56% at 400 nm
	73 % @Wavelength 480 nm	73 % @Wavelength 480 nm	Internal transmittance of 79% at 400 nm
IR Transmittance	74 % @Wavelength 2200 nm	74 % @Wavelength 2200 nm	Internal transmittance of 80% at 2200 nm.
UV Transmittance	<= 1.0 % @Wavelength 200 - 330 nm	<= 1.0 % @Wavelength 200 - 330 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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CSGT03 / 1992

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