84-778 12.5 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 850nm

The 84-778 is a Bandpass Filter with a diameter of 12.5 mm, manufactured by Edmund Optics. This filter is designed to transmit light within a specific range of wavelengths, while blocking other wavelengths, making it ideal for applications that require narrow-band light.

The filter's central wavelength (CWL) is 850nm, which is the wavelength at which the filter has its maximum transmittance. The cut-on wavelength is 825nm, and the cut-off wavelength is 875nm. This means that the filter starts transmitting at 825nm and stops transmitting at 875nm, effectively passing light in the 850nm range.

The filter is hard coated on both sides with the EDM 84-778 coating. This coating enhances the filter's durability and resistance to environmental factors, ensuring long-lasting performance. The filter has a thickness of 3.5 mm, providing structural stability and minimizing the risk of deformation.

The filter is of circular shape and has a thin lens design. It is made from UVFS MAL-1965 material, which is known for its excellent optical properties. The filter's geometry makes it compatible with various optical systems, and its thin design minimizes the impact on the overall system's performance.

The filter is currently in stock and available for purchase through the Edmund Optics website. The provided weblink leads directly to the product page, where more information about the filter, including its specifications, pricing, and availability, can be found.