64-683 25 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=3mm 825nm

The 64-683 is a Longpass Filter, part of the extensive catalog of optical elements provided by Edmund Optics. This filter features a circular shape, with a diameter of 25 mm and a thickness of 3 mm, making it suitable for various applications. The filter is designed with a traditional coating on both the front and back surfaces, enhancing its performance and durability.

The Longpass Filter is characterized by its cut-on wavelength of 825 nm, which is the wavelength at which the filter starts to transmit light. Below this wavelength, the filter blocks or reflects light, while above it, the filter allows light to pass through. This specific model does not have a cut-off wavelength, meaning it continues to transmit light at all longer wavelengths.

The filter is made from UVFS Mal-1965, a material known for its optical properties. It is designed in a Thin Lens shape, which can be beneficial in certain applications where a thin, lightweight optical element is required.

The filter is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. The link has been verified and is valid at the time of writing.