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87-822 12.5 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 1550nm

87-822 12.5 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 1550nm

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

Properties

Shape
Circular
Diameter
12.5 mm
Cut Off Frequency
1562.5 nm
Cut On Frequency
1537.5 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4440236216729967
λ
1550 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

87-822 12.5 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 1550nm

The 87-822 is a Bandpass Filter with a diameter of 12.5 mm, sourced from the reputable vendor, Edmund Optics. This filter is specifically designed for a central wavelength of 1550 nm, making it suitable for applications that require precise filtering within this range.

The filter boasts a hard coating on both the front and back surfaces, denoted as 'edm 87-822'. This coating enhances the filter's durability, making it resistant to wear and tear, a crucial factor for components subjected to frequent handling or harsh environments.

The physical data of the filter reveals a cut-on wavelength of 1537.5 nm and a cut-off wavelength of 1562.5 nm. This 25 nm bandpass, situated between the cut-on and cut-off wavelengths, is where the filter allows maximum transmission, effectively isolating the desired wavelength range from others.

The filter's geometry is another notable feature. It has a thickness of 3.5 mm, which, combined with its circular shape and thin lens design, ensures efficient light transmission and minimal distortion.

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