68-652 25 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 1650nm

The 68-652 is a 25 mm diameter Infrared (IR) Longpass Filter, manufactured by Edmund Optics. This filter is designed with a circular base shape and a thin lens form factor, making it suitable for a wide range of optical applications. The filter features a traditional coating on both the front and back surfaces, denoted as 'edm 33-968'.

The primary function of this filter is to allow the transmission of longer wavelengths while blocking shorter wavelengths. Specifically, it has a cut-on wavelength of 1650 nm, meaning it begins to transmit wavelengths at this point and beyond. Conversely, it has a cut-off wavelength of 0 nm, indicating that it blocks all wavelengths shorter than 1650 nm.

The filter's geometry includes a diameter of 25 mm and a thickness of 1 mm, providing a compact and robust design. The material used in this filter is silicon sal vil 1957, a common choice for IR filters due to its excellent transmission characteristics in the infrared region.

According to the provided item data, this filter is currently in stock and available for purchase. For more detailed information, including pricing and availability, please refer to the vendor's website using the provided weblink: https://www.edmundoptics.com/p/165mum-25mm-diameter-infrared-longpass-filter/23270/