215-0252 25.4 mm x 50.8 mm; N-BK7 Flat Rectangular Window; t=2 mm Uncoated

This is a Flat Rectangular Window, offered by EKSMA Optics, a renowned vendor in the optical components industry. The window is characterized by its base shape, which is rectangular, and its thin lens shape. The window's dimensions are 25.4 mm in width and 50.8 mm in length, making it suitable for a variety of applications. The thickness of the window is 2 mm, providing a good balance between durability and light transmission.

The window is made of N-BK7, a popular material in the optical industry, known for its excellent optical properties. This material, also known as Schott N-BK7, is a borosilicate crown glass, widely used in various optical applications due to its low coefficient of thermal expansion and high transmittance in the visible and near-infrared regions.

The window is uncoated, meaning it does not have any additional layers applied to its surface to alter its optical properties. This can be beneficial in applications where the natural properties of the material are desired, or where cost is a concern. However, it's important to note that uncoated windows may have higher reflectivity and lower transmission compared to coated windows.

The window is in stock and available for immediate purchase. For more information, you can refer to the vendor's website, which is provided in the item data.