11-986 25 mm Dia. First Surface UV Bandpass Filter; t=1.5 mm 228nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 240.5 nm
- Cut On Frequency
- 215.5 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5217655675706196
- λ
- 228 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
11-986 25 mm Dia. First Surface UV Bandpass Filter; t=1.5 mm 228nm
The 11-986 is a 25 mm diameter First Surface UV Bandpass Filter, with a thickness of 1.5 mm, specifically designed for use at a central wavelength of 228nm. This filter, offered by Edmund Optics, is a Bandpass Filter, a type that allows only a specific range of wavelengths to pass through while blocking others.
The filter's physical data includes a cut-on wavelength of 215.5nm and a cut-off wavelength of 240.5nm, with a full width at half maximum (FWHM) of 25nm. This means it passes wavelengths nearest to the central wavelength of 228nm, while significantly attenuating wavelengths further from this point.
The filter's coating, applied to both the front and back surfaces, is identified as 'edm 11-986'. This coating plays a crucial role in the filter's performance, ensuring the specified wavelength range is transmitted while other wavelengths are blocked.
The filter's geometry, with a diameter of 25mm and a thickness of 1.5mm, is designed to fit various optical systems. The shape of the filter is a Thin Lens, which is often used in optical systems to focus or diverge light.
The filter's catalog number is 11-986, and it can be found on the Edmund Optics website, where it is currently listed as in stock. This information, along with a link to the product page, is provided in the item data for convenience.