The 84-861 is a 25 mm diameter Wedge Prism made from UVFS material with a thickness of 3 mm and a 0.05489 deg wedge angle. This prism is sourced from Edmund Optics and is uncoated, making it suitable for use in a wide range of applications. The prism's geometry and material properties make it ideal for use in systems operating at a wavelength of 355 nm. The uncoated nature of the prism allows for custom coatings to be applied, depending on the specific requirements of your application. The prism's circular base shape and wedge shape make it a versatile component in optical systems. For more information, please refer to the vendor's website, where you can find the prism's current stock status.