11-987 25 mm Dia. First Surface UV Bandpass Filter; t=1.5 mm 232nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 237 nm
- Cut On Frequency
- 227 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.518761216726826
- λ
- 232 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
11-987 25 mm Dia. First Surface UV Bandpass Filter; t=1.5 mm 232nm
The 11-987 is a 25 mm diameter First Surface UV Bandpass Filter with a thickness of 1.5 mm, specifically designed for a central wavelength of 232nm. This filter, offered by Edmund Optics, is a Bandpass Filter, which allows light to pass through a specific range of wavelengths while blocking other wavelengths.
The filter's physical data includes a cut-on wavelength of 227nm and a cut-off wavelength of 237nm, ensuring a tight bandpass around the central wavelength. The front and back of the filter are coated with "edm 11-987", a coating that enhances the filter's performance and durability.
The filter's geometry, with a diameter of 25mm, provides a large aperture for efficient light collection. The thin lens shape of the filter allows for easy integration into optical systems. The filter is currently in stock and available for purchase through the Edmund Optics website.
This filter is ideal for applications that require narrowband UV transmission, such as UV spectroscopy, fluorescence microscopy, and UV laser applications. The First Surface design ensures that the coating is on the first surface the light encounters, reducing internal reflections and improving transmission.