89-561 12.5 mm Dia. Germanium Protective Flat Window; t=3 mm BBAR 3-5µm

The 89-561 is a 12.5 mm diameter Germanium Flat Window with a thickness of 3 mm, supplied by Edmund Optics. This protective window boasts a Broadband Anti-Reflection (BBAR) coating, specifically designed for the 3-5 µm wavelength range, ensuring optimal performance in the specified spectrum. The window is fabricated from Germanium Burnett, a high-quality material renowned for its excellent transmission properties in the infrared region.

The window's geometry is defined by its 12.5 mm diameter and 3 mm thickness, making it suitable for various applications where a compact, yet robust optical component is required. The Flat Window is designed in a Thin Lens shape, which not only enhances its durability but also allows for easy integration into optical systems.

The BBAR coating on both the front and back surfaces of the window is a significant feature, reducing reflection and enhancing transmission. This coating is specifically tailored for the 3-5 µm wavelength range, making it ideal for applications such as thermal imaging, spectroscopy, and other infrared-based technologies.