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67-739 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 248nm

67-739 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 248nm

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

Properties

Shape
Circular
Diameter
12.5 mm
Cut Off Frequency
253 nm
Cut On Frequency
243 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.5085507095161235
λ
248 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

67-739 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 248nm

The 67-739 is a mounted traditional coated bandpass interference filter, designed and manufactured by Edmund Optics. This filter is characterized by its circular shape, with a diameter of 12.5 mm, and a thickness of 3.5 mm, making it suitable for a wide range of optical applications.

The filter is constructed using a unique material identified as UVFS MAL-1965, which is specifically designed for use in the ultraviolet spectrum. The filter's central wavelength (CWL) is 248nm, with a full width at half maximum (FWHM) of 10nm. This precise wavelength control ensures the filter's effectiveness in specific applications.

The 67-739 filter features a cut-on wavelength of 243nm and a cut-off wavelength of 253nm. This wavelength range is achieved through a meticulous coating process, resulting in a front coating of EDM 67-739 and a back coating of the same. This coating process enhances the filter's performance and durability.

The filter's geometry is that of a thin lens, which contributes to its versatility in various optical systems. The filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its valid weblink status.

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