The FEL1050 Dia:1 in Longpass Filter is a high-quality optical component designed for applications requiring long-pass filtering at a cut-on wavelength of 1050nm. This filter is sourced from Thorlabs, a leading vendor in the optical industry, and is available for purchase directly from their website.
The filter is a circular-shaped element, boasting a diameter of 25.4mm and a thickness of 3.5mm. It is constructed from soda lime ru clear material, ensuring durability and reliability in various optical setups. The FEL1050 features a thin lens shape, which is advantageous in many applications due to its minimal impact on the overall optical path.
The FEL1050's primary function is to allow light with wavelengths greater than 1050nm to pass while blocking shorter wavelengths. This is achieved through the application of a specialized coating on both the front and back surfaces of the filter. The coating, identified as 'tho fel1050', is designed to provide optimal performance at the specified cut-on wavelength.