420FDL50 50 x 50 mm Longpass Dichroic Filter 420nm

The 420FDL50 is a high-quality dichroic filter, measuring 50 x 50 mm, designed for longpass applications with a cut-on wavelength of 420nm. This filter is sourced from Knight Optical, a renowned vendor known for their extensive catalog of optical elements.

The filter is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and durability. It has a thickness of 1.1mm, providing robustness and stability during operation. The rectangular base shape ensures easy integration into various optical systems.

The 420FDL50 features a dichroic coating on both the front and back surfaces, identified as 'kni 420fdl-0'. This coating is specifically designed to reflect or transmit light depending on the wavelength, making it ideal for longpass applications where light below 420nm is to be filtered out.

The physical data of the filter indicates a cut-on wavelength of 420nm and a cut-off wavelength of 0nm. This means that the filter starts transmitting light at 420nm and continues to do so for longer wavelengths. The 'thin lens' shape of the filter further enhances its usability in various optical setups.

The filter is currently in stock and available for immediate purchase. For more information, you can visit the vendor's website through the provided weblink.