WZN2604 25.4 mm Dia. Zinc Selenide Standard Round Window; t=4mm Uncoated

The WZN2604 is a 25.4 mm diameter Zinc Selenide (ZnSe) standard round window with a thickness of 4mm, sourced from Knight Optical. This window is a flat, circular optical component designed for use in various applications that require transparent barriers with minimal optical distortion.

The ZnSe material, identified as "znse marple-1964" in the material ID, is a common choice in optical systems due to its excellent transparency in the infrared region, making it suitable for use at a wavelength of 10600 nanometers. The window is uncoated, meaning it does not have any additional layers to enhance its optical properties or protect it from environmental factors.

The window's geometry is defined by its diameter and thickness. With a diameter of 25.4 mm, it provides a substantial aperture for light to pass through while maintaining a compact form factor. The 4mm thickness offers sufficient structural integrity for most applications while minimizing optical distortion.

The window's shape is described as a "Thin Lens," indicating that it has been polished to a high standard, ensuring excellent optical quality. This makes it suitable for use in applications where high image quality is required.