12-089 12.5 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 325nm

This is a 12.5 mm diameter Bandpass Filter, specifically designed with a 50nm bandwidth and a central wavelength of 325nm. The filter, identified by the catalog number 12-089, is sourced from the reputable vendor Edmund Optics. It is currently in stock and available for immediate purchase via the provided weblink.

The Bandpass Filter is a type of optical filter that allows only a specific range of wavelengths to pass through it while blocking others. In this case, the filter permits the transmission of light within the 325nm ± 25nm range. This feature makes it an ideal component for applications requiring narrow-band spectral filtering, such as fluorescence microscopy, spectroscopy, and other laser-based systems.

The filter is constructed from UVFS MAL-1965 material, a common choice for applications involving ultraviolet light. It has a thickness of 3.5 mm, providing sufficient structural integrity for most applications. The front and back surfaces of the filter are coated with EDM 12-089, a hard coating that enhances the filter's durability and resistance to scratches and other forms of damage.

The filter's geometry includes a 12.5 mm diameter, making it compatible with a wide range of optical systems. The cut-on wavelength is 300nm, and the cut-off wavelength is 350nm, further emphasizing its suitability for ultraviolet applications. The CWL, or central wavelength, is 325nm, indicating the peak transmission wavelength of the filter.