84-764 50 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=5 mm 900nm

The 84-764 is a high-performance longpass filter, boasting a 50 mm diameter and a thickness of 5 mm. This filter is designed and manufactured by Edmund Optics, a leading vendor in the optical industry, and is available for purchase through their official website. The catalog number for this specific filter is 84-764.

This longpass filter is characterized by its cut-on wavelength of 900nm, which means it begins to transmit light at this wavelength and above. The cut-off wavelength, on the other hand, is 0nm, indicating that it blocks all wavelengths below 900nm. This makes it an ideal component for applications that require the separation of infrared light from other parts of the spectrum.

The filter is made from UVFS Mal-1965, a material known for its optical properties and durability. It features a thin lens shape, which is designed to minimize optical aberrations and ensure high-quality performance. The front and back of the filter are coated with EDM 66-229, a hard coating that enhances the filter's durability and resistance to wear and tear.

In terms of dimensions, the filter has a diameter of 50mm and a thickness of 5mm, making it suitable for use in a wide range of optical systems. The filter's physical data, including its cut-on and cut-off wavelengths, are clearly marked on the filter itself, making it easy to identify and use in any application.