457 US LPF-12.5 12.5 mm Dia. Mounted Ultra-Steep Longpass Filter; t=3mm 457.9nm

The 457 US LPF-12.5 is a Longpass Filter, a type of optical element designed to transmit light with longer wavelengths and block light with shorter wavelengths. This particular model, sourced from Iridian Spectral Technologies, has a diameter of 12.5 mm and a thickness of 3 mm, making it a compact yet robust solution for various optical applications.

The filter's primary function is to cut on at 457.9 nm, allowing light of this wavelength and longer to pass through. The cut-off wavelength, which is the point at which the filter starts to significantly block light, is 0 nm. This ultra-steep cut-off characteristic is particularly useful in applications where precise wavelength discrimination is required.

The filter is coated on both the front and back with the Iridian coating "irr 457-us-lpf". This coating enhances the filter's performance and durability, ensuring reliable operation in a wide range of conditions. The filter's shape is that of a thin lens, further enhancing its versatility in optical systems.

For more information, including pricing and availability, please refer to the vendor's website at https://www.iridian.ca/product/457-us-lpf/. The link has been verified and the product is currently in stock.