The 65-691 is a 25 mm diameter Bandpass Interference Filter, manufactured by Edmund Optics. This filter is designed with a center wavelength of 486nm, providing excellent performance in applications that demand precise wavelength selection. The filter's physical dimensions include a diameter of 25mm and a thickness of 7.5mm, making it suitable for use in a variety of optical systems.
The 65-691 filter is cut on at 481nm and cut off at 491nm, ensuring a narrow bandwidth and high transmission at the desired wavelength. The coating on both the front and back surfaces of the filter is EDM 65-631, which is a traditional coating developed by Edmund Optics, known for its durability and excellent optical properties.
This filter is designed in a Thin Lens shape, which is a common configuration for optical filters. The catalog number for this item is 65-691, and it is currently in stock on the Edmund Optics website, as indicated by its weblink status. For more detailed information, users can visit the provided weblink: https://www.edmundoptics.com/p/486nm-cwl-25mm-dia-10nm-fwhm-interference-filter/20209/.