48-558 25 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=3mm 750nm

The 48-558 is a Longpass Filter, part of the extensive catalog of optical elements offered by Edmund Optics. This filter features a circular shape with a diameter of 25 mm and a thickness of 3 mm, designed to fit into various optical systems seamlessly. The filter's primary function is to transmit light with wavelengths above 750 nm, while blocking or attenuating shorter wavelengths, making it ideal for applications requiring long-pass filtering.

The 48-558 filter boasts a coating on both the front and back surfaces, specifically the EDM 49-031 coating, which enhances its performance and durability. This coating ensures optimal light transmission and reduces surface reflections, thereby minimizing signal loss and improving overall system efficiency.

The filter's physical data reveals that it is cut on at 750 nm, indicating the wavelength at which the filter starts to transmit light. The cut-off wavelength is 0 nm, meaning it blocks all wavelengths shorter than its specified cut-on wavelength. This characteristic makes the 48-558 particularly suitable for applications where long-pass filtering is crucial.