64-628 25 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=3mm 625nm

The 64-628 is a Longpass Filter, part of the extensive catalog of optical elements offered by Edmund Optics. This filter, with a 25 mm diameter and a thickness of 3 mm, is designed for use in applications where long-pass filtering is required.

The filter's primary function is to allow light of longer wavelengths to pass through while blocking or attenuating light of shorter wavelengths. In this case, the cut-on wavelength is 625 nm, meaning it begins to transmit light at this wavelength and beyond. The cut-off wavelength, however, is 0 nm, indicating that it blocks all wavelengths of light below its cut-on wavelength.

The filter is made from UVFS Mal-1965, a material specifically chosen for its optical properties. It features a Thin Lens shape, which is designed to minimize optical aberrations and distortions. The filter is coated on both the front and back with EDm 64-620, a coating that enhances its performance and durability.

According to the vendor's information, this filter is currently in stock and available for immediate purchase. For more detailed information, including pricing and availability, please refer to the provided weblink.