84-649 25 mm Dia. Traditional Coated OD 2.0 Shortpass Filter; t=3mm 1250nm

The 84-649 is a 25 mm diameter Shortpass Filter with an OD 2.0 and a thickness of 3mm, designed for use in optical systems that require the blocking of specific wavelengths while allowing others to pass through. This filter, sourced from Edmund Optics, is a part of their extensive catalog and is available for purchase directly from their website.

The Shortpass Filter is a type of optical filter that allows wavelengths shorter than a specified value to pass through while blocking wavelengths longer than this value. In the case of the 84-649, this cut-off wavelength is 1250nm. This makes it ideal for applications where the removal of infrared light is necessary.

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 distortions, ensuring the highest quality of light transmission.

The 84-649 is coated with EDM 84-641 on both the front and back surfaces. This coating enhances the filter's performance by reducing surface reflections and increasing transmission efficiency. It also provides protection against environmental factors, ensuring the longevity and reliability of the filter.