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85-901 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1450nm

85-901 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1450nm

Type
Filter
Subtype
Bandpass Filter
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
25 mm
Cut Off Frequency
1475 nm
Cut On Frequency
1425 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4452024286041654
λ
1450 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

85-901 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1450nm

The 85-901 is a Bandpass Filter, specifically designed by Edmund Optics with a diameter of 25 mm and a thickness of 3.5 mm. This filter is part of the UVFS MAL-1965 material ID family, which is renowned for its high-quality optical properties.

The Bandpass Filter is a type of optical filter that allows light to pass within a certain range of wavelengths, while blocking other wavelengths. In this case, the 85-901 filter is designed to allow light with a central wavelength (CWL) of 1450nm to pass, with a cut-on wavelength of 1425nm and a cut-off wavelength of 1475nm. This makes it ideal for applications that require the precise filtering of light in the 1450nm range.

The filter is hard coated on both the front and back, with the front coating being EDM 85-889 and the back coating also being EDM 85-889. This coating not only enhances the filter's durability but also its performance, ensuring that the filter maintains its specified properties even under harsh conditions.

The filter's thin lens shape further adds to its versatility, making it suitable for a wide range of optical systems. The filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its valid weblink status.

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