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581FDL25 25 mm Dia. Longpass Dichroic Filter 581nm

581FDL25 25 mm Dia. Longpass Dichroic Filter 581nm

Type
Filter
Subtype
Dichroic Filter
Brand
Knight Optical
Product webpage
Knight Optical products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
25 mm
Cut Off Frequency
Cut On Frequency
581 nm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5167817367777034
λ
588 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

581FDL25 25 mm Dia. Longpass Dichroic Filter 581nm by Knight Optical

The 581FDL25 is a high-quality Dichroic Filter, specifically a Longpass Filter with a 581nm cut-on wavelength, manufactured by Knight Optical. This filter is designed with a circular geometry, featuring a 25mm diameter and a thickness of 1.1mm, making it suitable for a wide range of optical applications.

The filter is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and high chemical resistance. The filter's coating, KNI 581FDL-0, is applied to both the front and back surfaces, enhancing its performance and durability.

The 581FDL25 filter is designed to transmit light at wavelengths above 581nm while reflecting or absorbing wavelengths below this value. This makes it ideal for applications where the removal of shorter wavelengths is required. The physical data indicates a cut-on wavelength of 581nm, ensuring precise filtering of the desired light spectrum.

Knight Optical, the vendor, is a reputable supplier of optical components, ensuring the filter's quality and reliability. The filter is currently in stock and available for immediate purchase through the provided web link.

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