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635FDL25 25 mm Dia. Longpass Dichroic Filter 635nm

635FDL25 25 mm Dia. Longpass Dichroic Filter 635nm

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
635 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

635FDL25 25 mm Dia. Longpass Dichroic Filter 635nm

The 635FDL25 is a Dichroic Filter, specifically designed for longpass applications with a cut-on wavelength of 635nm. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components. The filter is designed with a circular geometry, having a diameter of 25mm and a thickness of 1.1mm, making it suitable for a wide range of optical systems.

The filter is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and high damage threshold. The coating on both the front and back surfaces of the filter is KNI 635FDL-0, which is specifically designed to achieve the desired longpass characteristics.

The physical data of the filter indicates that it starts transmitting at 635nm, making it ideal for applications where light of longer wavelengths needs to be passed while blocking shorter wavelengths. The filter is currently in stock and available for immediate purchase through the vendor's website.

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