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615FDL25 25 mm Dia. Longpass Dichroic Filter 615nm

615FDL25 25 mm Dia. Longpass Dichroic Filter 615nm

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
615 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

615FDL25 25 mm Dia. Longpass Dichroic Filter 615nm by Knight Optical

The 615FDL25 is a high-quality dichroic filter, specifically designed for longpass applications, with a cut-on wavelength of 615nm. This filter, sourced from Knight Optical, is a circular element, boasting a diameter of 25mm and a thickness of 1.1mm, making it an ideal choice for various optical systems.

The filter is constructed from N-BK7 Schott, a widely used optical glass due to its excellent optical properties and high homogeneity. This material ensures the filter delivers reliable and consistent performance. The filter's coating, KNI 615FDL-0, is applied to both the front and back surfaces, further enhancing its functionality.

The 615FDL25's physical data is also noteworthy. It has a cut-on wavelength of 615nm, meaning it starts transmitting light at this wavelength, and a cut-off wavelength of 0nm, indicating it transmits all wavelengths below its cut-on wavelength. This makes it an excellent choice for applications where longpass filtering is required.

In terms of geometry, the filter is shaped as a thin lens, which can be beneficial in certain optical configurations. The filter is currently in stock and available for immediate purchase through the provided weblink.

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