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65-139 25 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.5 mm 442nm

65-139 25 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.5 mm 442nm

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

Properties

Shape
Circular
Diameter
25 mm
Cut Off Frequency
447 nm
Cut On Frequency
437 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4661886426022637
λ
442 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

65-139 25 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.5 mm 442nm

The 65-139 is a Bandpass Filter, specifically designed by Edmund Optics with a diameter of 25 mm and a thickness of 3.5 mm. This filter is part of the UVFS MAL-1965 material ID family, which ensures high-quality performance and durability.

The filter's primary function is to allow light within a specific wavelength range to pass through while blocking out other wavelengths. In this case, the Cut-On wavelength is 437nm, and the Cut-Off wavelength is 447nm, with a Central Wavelength (CWL) of 442nm. This makes it ideal for applications that require the precise filtering of light in the 442nm range.

The 65-139 filter features hard coating on both the front and back, specifically the EDM 65-078 coating. This coating enhances the filter's durability and resistance to wear and tear, making it suitable for use in various environments.

The filter's shape is defined as a Thin Lens, which is a type of optical lens with a very small thickness compared to its diameter. This shape allows for minimal distortion and a wide field of view, making it suitable for a variety of optical applications.

The filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its valid weblink status. For more detailed information or to make a purchase, users can follow the provided weblink.

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