The WQK5002-AI2 is a precision round window, boasting a diameter of 50 mm and a thickness of 6 mm. This window is crafted from N-BK7, a high-quality glass material from Schott, ensuring excellent optical performance. The window features an anti-reflective (AR) coating, specifically designed for the wavelength range of 1050-1700nm, on both the front and back surfaces. This coating enhances the window's transmission capabilities, making it ideal for applications that require high light transmission within the specified wavelength range. The window's thin lens shape further contributes to its optical performance, making it a versatile component for various optical systems. This item is currently in stock at Knight Optical, a reputable vendor in the optical industry. For more information, you can visit the provided weblink.