20BW40-30 50.8 mm Dia. N-BK7 Parallel Optical Flat Window; t=10 mm Uncoated

The 20BW40-30 is a high-quality optical window from the renowned vendor MKS/Newport. This window, designed for use in optical systems, features a flat design with a circular shape, making it suitable for a wide range of applications.

The window has a diameter of 50.8 mm and a thickness of 10 mm, providing a robust and stable platform for optical components. The material used for this window is N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is sourced from Schott, a leading manufacturer of high-precision glass materials.

The N-BK7 material is specifically designed for use in the visible spectrum, with a center wavelength of 632.8 nm. This makes it ideal for applications that require high transmittance in this wavelength range, such as laser systems or microscopy.

The window is uncoated, meaning it does not have any additional layers applied to its surface. This can be beneficial in applications where a specific coating is not required, as it reduces the complexity and cost of the component. However, it's important to note that uncoated windows may have higher reflectivity compared to coated ones, which could affect the performance of the optical system.

The 20BW40-30 is currently in stock and available for purchase through the MKS/Newport website. With its robust design, high-quality materials, and excellent optical properties, this window is a reliable choice for various optical applications.