This product is a 35 mm diameter, 1 mm thick Sapphire Flat Window, offered by Edmund Optics. It is specifically designed for Near-Infrared (NIR) applications, with a wavelength of 587.6 nm. The window is coated with an AR coating on both the front and back surfaces, following the standard EDM NIR-I curve. This coating enhances its performance in the NIR spectrum, particularly in the 600-1050 nm range, making it ideal for a wide range of NIR applications. The window is designed in a Thin Lens shape, and its geometry, including the diameter and thickness, is optimized for efficient light transmission. The product is currently in stock and available for purchase through the provided weblink.