The 64-711 is a Longpass Filter, measuring 50 mm in diameter and 5 mm in thickness, sourced from Edmund Optics. This filter is designed for use with thin lenses and is made from UVFS Mal-1965 material, offering excellent optical performance.
The filter's primary function is to allow light of longer wavelengths to pass through while blocking shorter wavelengths. The cut-on wavelength is 1100nm, indicating that it begins to transmit light at this point on the spectrum. Conversely, the cut-off wavelength is 0nm, meaning it blocks all wavelengths shorter than 1100nm.
The 64-711 filter features identical coatings on both the front and back surfaces. These coatings, identified as EDM 49-038, are designed to enhance the filter's performance and durability.
For more detailed information, including availability and pricing, please refer to the following link: https://www.edmundoptics.com/p/1100nm-50mm-diameter-od-2-longpass-filter/19417/