64-331 12.5 mm Dia. Hard Coated High Performance OD 4.0 Shortpass Filter; t=1.5 mm 1100nm

The 64-331 is a high-performance shortpass filter, designed and manufactured by Edmund Optics, a leading global supplier of optical components. This filter is specifically engineered for use in applications where precise wavelength control is required, particularly those involving near-infrared (NIR) light.

The filter boasts a 12.5 mm diameter and a thickness of 1.5 mm, making it suitable for use in a wide range of optical systems. It is constructed from UVFS Mal-1965, a material known for its excellent optical properties and durability. The filter's shortpass characteristics are defined by a cut-on wavelength of 0 nm and a cut-off wavelength of 1100 nm, meaning it allows light with wavelengths shorter than 1100 nm to pass through while blocking longer wavelengths.

The 64-331 filter features hard coating on both the front and back surfaces, enhancing its durability and resistance to scratches and other forms of damage. This coating also helps to reduce surface reflections, improving the overall efficiency and performance of the filter.

The filter's shape is that of a thin lens, which is designed to minimize optical aberrations and distortions. This makes it ideal for use in high-precision optical systems where image quality is paramount.

According to the vendor's website, the 64-331 filter is currently in stock, indicating that it is readily available for purchase and use. Further information, including detailed specifications and purchasing options, can be found at the provided weblink.