The 68-509 is a circular, flat window made of Zinc Selenide (ZnSe) with a diameter of 50 mm and a thickness of 1 mm. This uncoated window is sourced from Edmund Optics and is currently in stock. The ZnSe material is identified as "znse marple-1964" in the vendor's catalog.
The window is designed for use at a wavelength of 587.6 nm, making it suitable for applications that require high transmission in the visible spectrum. Its thin lens shape allows for minimal optical distortion, making it ideal for use as a protective window in various optical systems.
Please note that this window does not come with any coating. The uncoated nature of this window can be beneficial in certain applications where anti-reflection or other types of coatings are not required or desirable. However, for applications where such coatings are necessary, please consider other items in our catalog that may better suit your needs.
For more information, including pricing and availability, please refer to the vendor's website using the provided weblink.