210-0202E 25.4 mm Dia. N-BK7 Flat Round Window; t=2 mm Uncoated

The 210-0202E is a Flat Round Window, part of the extensive optical components catalog offered by EKSMA Optics. This particular model boasts a 25.4 mm diameter and a thickness of 2 mm, making it a versatile option for various applications.

The window is made from N-BK7, a popular material in the optical industry due to its excellent optical properties. Schott's N-BK7 is a borosilicate crown glass known for its low dispersion and high homogeneity, making it an ideal choice for applications that require high-quality imaging or precise light control.

The window is uncoated, meaning it does not have any additional layers applied to its surface. While coatings can enhance certain properties such as transmission, reflection, or scratch resistance, an uncoated window offers simplicity and versatility. It can be used in a wide range of applications without the need to consider the specific properties that a coating might introduce.

This window is designed for a wavelength of 633 nm, which is within the visible light spectrum. This makes it suitable for applications that use red light, such as certain types of lasers or lighting systems.