39-402 50.8 mm Dia. Zinc Selenide Protective Flat Window; t=3 mm Uncoated

The 39-402 is a 50.8 mm diameter Zinc Selenide (ZnSe) protective flat window, with a thickness of 3 mm and no coating. This window is sourced from Edmund Optics, a reputable vendor in the optical industry.

As a window, this component is designed to protect optical surfaces from damage while allowing light to pass through. The flat window design ensures a uniform, distortion-free light path, making it suitable for a wide range of applications. The 50.8 mm diameter provides a generous aperture, allowing for high light throughput and efficient system design.

The Zinc Selenide material (ZnSe) is a popular choice for optical windows due to its excellent transparency in the infrared region, making it ideal for applications such as thermal imaging and night vision. It also has good mechanical strength and chemical resistance, ensuring durability and longevity in various environments.

The window's 3 mm thickness provides a good balance between mechanical strength and light weight, making it suitable for both benchtop and portable systems. The uncoated design means the window does not have any anti-reflective or other surface treatments. This can be beneficial in applications where such coatings may not be required or could introduce unwanted effects.