87-238 12.5 mm Dia. Hard Coated Tri-Band Fluorescence Bandpass Filter; t=2 mm 464/542/639nm

The 87-238 is a high-quality Tri-Band Fluorescence Bandpass Filter, sourced from the renowned optical components vendor, Edmund Optics. This filter is designed with a circular shape, featuring a diameter of 12.5 mm and a thickness of 2 mm, making it suitable for a wide range of optical applications.

The filter is made from UVFS MAL-1965 material, a unique substrate known for its excellent optical properties. It is specifically designed to allow transmission at three distinct wavelengths: 464nm, 542nm, and 639nm, while effectively blocking other wavelengths. This makes it an ideal choice for applications that require precise wavelength selection, such as fluorescence microscopy, spectroscopy, and other laser-based systems.

The 87-238 filter features hard coating on both the front and back surfaces. This coating enhances the filter's durability and resistance to scratches and other forms of damage, ensuring long-lasting performance. The cut-on wavelength is 452.5nm, and the cut-off wavelength is 475.5nm, providing a narrow and precise bandpass. The central wavelength (CWL) is 464nm, ensuring optimal performance for its intended applications.

The filter's shape is that of a thin lens, which is beneficial for applications where space is a constraint. The catalog number for this item is 87-238, and it is currently in stock, as indicated by its valid weblink status. For more information or to make a purchase, users can visit the provided weblink.