210-0402E 38.1 mm Dia. N-BK7 Flat Round Window; t=2 mm Uncoated

The 210-0402E is a Flat Round Window, a type of optical component designed for use in various applications. This particular model boasts a diameter of 38.1 mm and a thickness of 2 mm, making it a robust and reliable choice for many optical systems.

The window is made from N-BK7, a high-quality glass material manufactured by Schott. N-BK7 is renowned for its excellent optical properties, including a low refractive index and low dispersion, making it an ideal choice for a wide range of applications, particularly where high precision is required.

This window is uncoated, meaning it does not have any additional layers applied to its surface. While coatings can enhance certain properties of an optical component, such as reducing reflectivity or increasing durability, an uncoated window can offer advantages in terms of simplicity, cost-effectiveness, and compatibility with various coating types.

The window's geometry is defined as a Thin Lens, indicating that it has minimal curvature and can be considered "flat" for practical purposes. This makes it suitable for use as a protective barrier or interface in optical systems without significantly altering the path of light.

The window is designed to work with a wavelength of 633 nm, a common wavelength used in various applications, including laser systems and spectroscopy.

This window is available from EKSMA Optics, a reputable vendor known for its extensive range of optical components. According to the vendor, the window is currently in stock, ensuring quick and efficient delivery for your optical project needs.

For more information, please refer to the vendor's website at https://eksmaoptics.com/optical-components/laser-windows/flat-round-windows/.