67-808 25 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 254nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 259 nm
- Cut On Frequency
- 249 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5053336321686834
- λ
- 254 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
67-808 25 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 254nm
The 67-808 is a 25 mm diameter mounted bandpass interference filter, designed and manufactured by Edmund Optics. This filter is specifically engineered for use at a central wavelength of 254 nm, with a full width at half maximum (FWHM) of 10 nm. The filter is mounted, providing a convenient and ready-to-use solution for various optical applications.
The filter's geometry includes a diameter of 25 mm and a thickness of 3.5 mm, making it suitable for applications that require a substantial optical path length. The cut-on wavelength is 249 nm, and the cut-off wavelength is 259 nm, ensuring a narrow bandwidth and high transmission at the desired wavelength.
The 67-808 filter features a traditional coating on both the front and back surfaces, specifically the EDM 67-741 coating. This coating enhances the filter's performance by reducing surface reflections and increasing transmission, thereby improving the overall signal-to-noise ratio in the system.
The filter's shape is that of a thin lens, which can be beneficial in applications where a flat surface is not required or where the lens shape can be utilized for other optical functions. This filter is currently in stock and available for immediate shipping, as indicated by its valid weblink status.