This is the 531-40 EX, a 25 mm diameter mounted excitation fluorescence bandpass filter, with a thickness of 3mm, specifically designed for the wavelength of 531nm. The filter is sourced from the reputable vendor, Iridian Spectral Technologies, and is currently in stock.
The filter is a Bandpass type, which means it allows a range of wavelengths to pass through while blocking others. In this case, the cut-on wavelength is 511nm, and the cut-off wavelength is 551nm, ensuring that only the desired light spectrum is transmitted.
The filter is made of UVFS MAL-1965 material, and it features a Thin Lens shape. The front and back of the filter are coated with "iri 531-40-ex", a coating specifically designed for this filter to enhance its performance and durability.
For more detailed information, you can refer to the catalog number "531-40 EX" and visit the vendor's website through the provided weblink: https://www.iridian.ca/product/531-40-ex/. The link has been verified and is currently valid, indicating that the filter is in stock and ready for purchase.