34-428 50 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm Uncoated

The 34-428 is a 50 mm diameter, 2 mm thick uncoated flat window made from N-BK7 glass, a popular material in the optical industry due to its excellent optical properties. This window is sourced from Edmund Optics, a reputable vendor known for their high-quality optical components.

The window is designed in a flat configuration, which is ideal for applications that require minimal optical distortion. Its circular shape, with a diameter of 50 mm, makes it versatile and compatible with a wide range of optical systems. The window's thickness, 2 mm, provides sufficient structural integrity while maintaining a low profile to minimize its impact on the overall optical path.

The window is made from N-BK7 Schott glass, a borosilicate crown glass known for its low dispersion and high homogeneity. This makes it an excellent choice for applications that require high optical precision, such as imaging systems, beam delivery systems, and laser applications.

Notably, the window is uncoated, meaning it does not have any anti-reflective or other surface coatings. This can be advantageous in certain applications where coatings may introduce unwanted optical effects or require additional maintenance. However, it's important to consider the potential for increased reflection at the air-glass interface, which could impact transmission in some applications.