69-197 12.5 x 17.6 mm Dichroic Shortpass Filter; t=1.05mm 850nm

The 69-197 is a Dichroic Shortpass Filter, measuring 12.5 x 17.6 mm with a thickness of 1.05mm, sourced from the renowned optical components vendor, Edmund Optics. This filter is designed to reflect shorter wavelengths and transmit longer wavelengths, making it ideal for various applications in photonics, spectroscopy, and imaging.

The filter's primary function is to cut off light at a specific wavelength, in this case, 850nm. The 'cut on' wavelength is 0nm, indicating that it allows all wavelengths shorter than 850nm to pass through. This characteristic is particularly useful in applications where the detection of specific wavelengths is crucial, such as in fluorescence microscopy or hyperspectral imaging.

The filter is made from UVFS Mal-1965, a material known for its excellent optical properties. It features a dichroic coating on both the front and back surfaces, identified as EDM 69-185. This coating enhances the filter's performance by ensuring high reflectivity for shorter wavelengths and high transmissivity for longer wavelengths.

The 69-197 is available for purchase directly from the Edmund Optics website, and as of the time of data collection, it is in stock. For more detailed information, including technical specifications and purchasing options, please refer to the provided weblink.