67-809 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
67-809 25 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 254nm
The 67-809 is a 25 mm diameter mounted bandpass interference filter, designed and manufactured by Edmund Optics. This filter is specifically engineered for use at a center wavelength of 254 nm, with a full width at half maximum (FWHM) of 40 nm. The filter is mounted, providing a convenient and secure method of integration into optical systems.
The filter's geometry includes a diameter of 25 mm and a thickness of 3.5 mm, making it suitable for a wide range of applications. The cut-on wavelength is 249 nm, and the cut-off wavelength is 259 nm, providing a narrow band of transmission. The coating on both the front and back of the filter is EDM 67-742, which is a traditional coating designed to enhance the filter's performance.
The filter's shape is that of a thin lens, which can be beneficial in certain optical system designs. The catalog number for this filter is 67-809, and it is currently in stock, according to the vendor's website. The filter is available for purchase directly from the vendor, with a link provided in the item data for convenience.