67-828 25 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=5.4 mm 370nm

The 67-828 is a 25 mm diameter mounted traditional coated bandpass interference filter, with a thickness of 5.4 mm, specifically designed for applications requiring a center wavelength of 370nm. This filter is sourced from the reputable vendor, Edmund Optics, and is available for purchase directly from their website.

The filter is characterized by its bandpass properties, which allow it to selectively transmit light within a specific wavelength range while blocking other wavelengths. The cut-on wavelength is 365nm, and the cut-off wavelength is 375nm, providing a narrow bandwidth that is crucial for many optical applications. The central wavelength of 370nm, denoted as CWL, is the wavelength at which the filter exhibits its maximum transmittance.

The filter is constructed from UVFS MAL-1965 material, a common choice for applications involving ultraviolet light. It features a thin lens shape, which is beneficial for applications where space is a constraint or where minimal optical path difference is required.

The filter's front and back surfaces are coated with EDM 67-761, a proprietary coating developed by Edmund Optics. This coating enhances the filter's performance by reducing surface reflections and improving transmission efficiency.