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84-781 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 400nm

84-781 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 400nm

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
425 nm
Cut On Frequency
375 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4701161180769884
λ
400 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

84-781 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 400nm

The 84-781 is a Bandpass Filter, sourced from the reputable vendor Edmund Optics. This particular filter is designed for use with wavelengths of 400nm, making it suitable for applications requiring precise control over specific light frequencies.

The filter boasts a circular shape, with a diameter of 25mm, providing a substantial surface area for light to pass through. The thickness of the filter is 3.5mm, offering robustness and durability. The filter's material ID is UVFS MAL-1965, indicating its specific composition and properties.

The 84-781 features a Hard Coated OD 4.0, which enhances its durability and resistance to wear and tear. The coating also aids in reducing unwanted reflections and increasing transmission efficiency.

The filter's physical data includes a cut-on wavelength of 375nm and a cut-off wavelength of 425nm. This means that it allows light within this specific range to pass through while blocking out other wavelengths. The Central Wavelength (CWL) is 400nm, indicating the midpoint of the filter's passband.

The front and back of the filter are coated with EDm 84-769, suggesting that the coating is consistent across both sides. The filter's shape is that of a Thin Lens, which may have implications for its optical properties and how it interacts with other optical elements in a system.

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