68-662 50 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 7300nm

The 68-662 is a 50 mm diameter Infrared (IR) Longpass Filter, sourced from the reputable vendor Edmund Optics. This filter is designed with a circular base shape and a thin lens form factor, making it an ideal choice for various optical applications. The filter's primary function is to allow the transmission of longer wavelengths while blocking shorter ones, making it particularly useful in infrared spectroscopy, photography, and other similar fields.

The filter's physical data reveals a cut-on wavelength of 7300nm, indicating that it begins to transmit light at this point on the spectrum. Conversely, it has a cut-off wavelength of 0nm, meaning it blocks all wavelengths shorter than 7300nm. This specific characteristic makes it a Longpass Filter, as it allows the passage of longer wavelengths and blocks shorter ones.

The 68-662 filter is made from Germanium Burnett, a material known for its excellent optical properties, particularly in the infrared region. This material ensures high transmission rates and maintains the filter's integrity across a wide range of temperatures and environmental conditions.

The filter features identical coatings on both the front and back surfaces, specifically the EDM 33-972 coating. This coating enhances the filter's performance by reducing surface reflections and improving overall transmission.

For more detailed information, including pricing and availability, please refer to the provided weblink: https://www.edmundoptics.com/p/730mum-50mm-diameter-infrared-longpass-filter/23280/. The link also provides the current status of the item, indicating whether it's in stock or not.