The 64-698 is a Longpass Filter, sourced from Edmund Optics, with a diameter of 50 mm and a thickness of 5 mm. This filter is designed for use in optical systems where the primary requirement is to block shorter wavelengths and transmit longer wavelengths. The cut-on wavelength for this filter is 450 nm, meaning it begins to transmit light at this wavelength and beyond.
The filter is made from UVFS Mal-1965 material, a common choice for optical filters due to its excellent transmission characteristics and durability. The filter is coated on both sides with EDM 49-025 coating, which enhances its performance by reducing surface reflections and improving transmission.
This filter is designed for use in Thin Lens optical systems, making it suitable for a wide range of applications. The filter is currently in stock and available for immediate purchase, as indicated by its weblink status. For more information, including detailed specifications and purchasing options, please refer to the provided weblink.