67-872 50 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 239nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- Cut Off Frequency
- 244 nm
- Cut On Frequency
- 234 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5139684093655286
- λ
- 239 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
67-872 50 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 239nm
The 67-872 is a 50 mm diameter mounted bandpass interference filter, designed and manufactured by Edmund Optics. This filter is specifically coated to allow transmission within a narrow range of wavelengths around 239nm, while effectively blocking other wavelengths. The filter's thickness measures 3.5 mm, providing a balance between durability and optical performance.
This filter is part of the UVFS MAL-1965 material family, known for its high-quality optical properties. The cut-on wavelength is 234nm, and the cut-off wavelength is 244nm, resulting in a full width at half maximum (FWHM) of 10nm. This precise wavelength control makes the 67-872 an ideal choice for applications requiring narrowband filtering in the ultraviolet (UV) spectrum.
The front and back surfaces of the filter are coated with EDM 67-738, a proprietary coating developed by Edmund Optics. This coating enhances the filter's performance by reducing surface reflections and improving transmission efficiency. The filter's shape is that of a thin lens, ensuring easy integration into various optical systems.
For more information, including pricing and availability, please refer to the vendor's website at https://www.edmundoptics.com/p/239nm-cwl-10nm-fwhm-50mm-mounted-diameter/22539/. The link has been verified and indicates that the filter is currently in stock.
