This is a 35-877 Bandpass Filter, offered by Edmund Optics, with a diameter of 12.5 mm and a thickness of 3.5 mm. The filter is designed to transmit light within a specific range of wavelengths, centered around 300nm, while blocking other wavelengths. The cut-on wavelength is 295nm, and the cut-off wavelength is 305nm, providing a narrow 10nm bandwidth.
The filter is made from UVFS MAL-1965 material, and it features hard coating on both the front and back surfaces, denoted as EDM 35-877. This coating enhances the filter's durability and resistance to environmental factors, making it suitable for various applications.
The 35-877 Bandpass Filter is available in a thin lens shape, and according to the vendor's information, it is currently in stock. For more details, you can refer to the product's webpage at https://www.edmundoptics.com/p/300nm-cwl-125mm-dia-hard-coated-od-4-10nm-bandpass-filter/33370/.