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68-660 50 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 3600nm

68-660 50 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 3600nm

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

Properties

Shape
Circular
Diameter
50 mm
Cut Off Frequency
Cut On Frequency
3600 nm

Material

Name
Germanium
Dispersion Equation
Sellmeier
n (λ)
5.3146589099372665
λ
588 nm
B1
0.4886331
C1
1.393959 μm2
B2
14.5142535
C2
0.1626427 μm2
B3
0.0091224
C3
752.19 μm2

68-660 50 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 3600nm

The 68-660 is a 50 mm diameter Infrared (IR) Longpass Filter, manufactured by Edmund Optics. This filter is designed with a traditional coating, enhancing its performance and durability. The filter's primary function is to allow the transmission of longer wavelengths while blocking shorter ones, making it ideal for infrared applications.

The filter's geometry includes a diameter of 50 mm and a thickness of 1 mm, providing a compact and lightweight solution for various optical systems. The cut-on wavelength is set at 3600 nm, indicating that it begins to transmit wavelengths at this point and beyond. Conversely, the cut-off wavelength is 0 nm, meaning it blocks all wavelengths shorter than its cut-on point.

The 68-660 filter features a Thin Lens shape, which is beneficial for applications requiring minimal optical path length deviation. The front and back of the filter are coated with 'edm 33-970', a coating type that enhances the filter's performance and longevity.

This filter is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. The link's validity ensures that users can access the most up-to-date product information and availability.

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