68-658 50 mm Dia. Traditional Coated Infrared (IR) Longpass Filter; t=1mm 1650nm

The 68-658 is a 50 mm diameter Infrared (IR) Longpass Filter, manufactured by Edmund Optics. This filter is designed with a traditional coating and a thin lens shape, making it suitable for a wide range of applications. The filter's primary function is to allow light with wavelengths greater than 1650nm to pass through while blocking shorter wavelengths.

The filter's geometry includes a diameter of 50mm and a thickness of 1mm, providing a compact and lightweight solution for your optical needs. The cut-on wavelength is 1650nm, indicating that it begins to transmit light at this wavelength and beyond. The cut-off wavelength is 0nm, meaning it blocks all wavelengths shorter than 1650nm.

The 68-658 filter features a coating on both the front and back surfaces, identified as 'edm 33-968'. This coating enhances the filter's performance and durability, ensuring reliable operation and longevity.

This filter is currently in stock and available for purchase through the provided weblink. Detailed specifications, including catalog number and vendor information, can also be found on this link.