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89-665 50 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 1150nm

89-665 50 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 1150nm

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
1150 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

89-665 50 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 1150nm

The 89-665 is a high-performance longpass filter, boasting a 50 mm diameter and a thickness of 3 mm, sourced from the reputable vendor, Edmund Optics. This filter is designed with a hard coating, enhancing its durability and longevity, making it an ideal choice for various optical applications.

The filter's primary function is to allow light transmission above a specified wavelength, while blocking or attenuating light below this cut-on wavelength. In this case, the 89-665 is designed to cut on at 1150nm, making it suitable for applications where longer wavelengths are in use.

The 89-665 features a circular shape, a standard in optical components, and is constructed from UVFS Mal-1965 material. This material ensures the filter's robustness and efficiency in its designated role within an optical system.

The filter's coating is another crucial aspect of its design. Both the front and back of the 89-665 are coated with EDM 89-657, a coating that contributes to the filter's overall performance and longevity.

The 89-665 is available in a thin lens shape, which is beneficial in applications where space is a constraint. This filter is currently in stock and can be purchased directly from the Edmund Optics website, as indicated by its valid weblink status.

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