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500FDL50 50 x 50 mm Longpass Dichroic Filter 500nm

500FDL50 50 x 50 mm Longpass Dichroic Filter 500nm

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

Properties

Shape
Rectangular
Cut Off Frequency
Cut On Frequency
500 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

500FDL50 50 x 50 mm Longpass Dichroic Filter 500nm

The 500FDL50 is a Dichroic Filter, specifically a Longpass Filter with a 50 x 50 mm square shape, sourced from Knight Optical. This filter is designed to transmit light at wavelengths above 500nm while blocking or reflecting wavelengths below this point.

The filter is made from N-BK7 Schott, a popular optical glass due to its excellent homogeneity, low auto-fluorescence, and high damage threshold. The geometry of the filter includes a width of 50mm, a length of 50mm, and a thickness of 1.1mm, making it a thin and compact optical element.

The physical data of the filter indicates a cut-on wavelength of 500nm, meaning it starts to transmit light at this point, and a cut-off wavelength of 0nm, indicating it blocks all wavelengths below this point. The coating on both the front and back surfaces of the filter is KNI 500FDL-0.

This filter is currently in stock and available for immediate purchase from Knight Optical's website. The weblink provided leads directly to the product page for easy access and further information.

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