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64-686 25 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=3mm 975nm

64-686 25 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=3mm 975nm

Type
Filter
Subtype
Longpass Filter
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

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

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.458448271212196
λ
588 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

64-686 25 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=3mm 975nm

The 64-686 is a Longpass Filter, measuring 25 mm in diameter and 3 mm in thickness, sourced from Edmund Optics. This filter is designed to transmit light with wavelengths above 588 nm, making it suitable for applications requiring long-wavelength transmission.

The filter features a traditional coating on both the front and back surfaces, identified as EDM 64-679. This coating enhances the filter's performance and durability. The filter's geometry, including its diameter and thickness, is designed to accommodate various optical systems, particularly those requiring thin lens elements.

The 64-686 filter's physical data specifies a cut-on wavelength of 975 nm, indicating the wavelength at which the filter begins to transmit above 50% of incident light. The cut-off wavelength, on the other hand, is 0 nm, meaning the filter transmits all wavelengths below its cut-on wavelength.

This filter is available for purchase through the Edmund Optics website, and the link provided indicates its current availability status. The catalog number, 64-686, can be used for easy reference and identification.

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