Schott BG18 Band Pass Filter

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Schott BG18 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 480/250,DIN KP 605
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Physical Properties	Metric	English	Comments

Density	2.68 g/cc	0.0968 lb/in³

Chemical Properties	Metric	English	Comments
Acid Class, SR	2	2
Alkali Class, AR	2	2
Stain Resistance Class, FR	0.0	0.0

Thermal Properties	Metric	English	Comments
CTE, linear	7.40 µm/m-°C @Temperature -30.0 - 70.0 °C	4.11 µin/in-°F @Temperature -22.0 - 158 °F
	8.80 µm/m-°C @Temperature 20.0 - 300 °C	4.89 µin/in-°F @Temperature 68.0 - 572 °F
Transformation Temperature, Tg	459 °C	858 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.54 @Wavelength 587.6 nm	1.54 @Wavelength 587.6 nm	He
	1.55 @Wavelength 404.7 nm	1.55 @Wavelength 404.7 nm	Hg
Transmission, Visible	<= 1.0 % @Wavelength 660 - 700 nm	<= 1.0 % @Wavelength 660 - 700 nm
	83 % @Wavelength 500 - 530 nm	83 % @Wavelength 500 - 530 nm	Internal transmittance of 92% from 510-520 nm
IR Transmittance	72 % @Wavelength 2400 nm	72 % @Wavelength 2400 nm	Internal transmittance of 79% at 2400 nm.
UV Transmittance	<= 0.30 % @Wavelength 200 - 320 nm	<= 0.30 % @Wavelength 200 - 320 nm
	59 % @Wavelength 390 nm	59 % @Wavelength 390 nm	Internal transmittance of 64% at 390 nm
Reflection Coefficient, Visible (0-1)	0.91 @Wavelength 587.6 nm	0.91 @Wavelength 587.6 nm	Reflection Factor P

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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CSGT05 / 1994

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