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85-892 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1000nm

85-892 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1000nm

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
1025 nm
Cut On Frequency
975 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4504174093336364
λ
1000 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

85-892 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1000nm

The 85-892 is a 25 mm diameter Bandpass Filter, supplied by Edmund Optics, with a center wavelength of 1000nm. This filter is designed to transmit light within a specific range of wavelengths while blocking other wavelengths, making it ideal for applications requiring narrowband light transmission.

The filter features a hard coating on both the front and back surfaces, identified as EDM 85-880. This coating enhances the filter's durability and resistance to environmental factors, ensuring long-term performance and reliability.

The physical dimensions of the filter include a diameter of 25mm and a thickness of 3.5mm. The cut-on wavelength is 975nm, and the cut-off wavelength is 1025nm, providing a relatively narrow bandwidth for precise light filtering. The CWL, or Central Wavelength, is 1000nm, indicating the midpoint of the filter's transmission range.

This filter is designed in the shape of a thin lens, which can be beneficial in certain optical systems where minimal thickness is required. The catalog number for this item is 85-892, and it is currently in stock, according to the vendor's website.

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