89-564 25 mm Dia. Germanium Protective Flat Window; t=2 mm BBAR 3-5µm

The 89-564 is a 25 mm diameter Germanium Flat Window, with a thickness of 2 mm, designed for protective applications. This window boasts a high-quality Broadband Anti-Reflection (BBAR) coating on both the front and back surfaces, optimized for the 3-5 µm wavelength range. The window is sourced from the reputable vendor, Edmund Optics, and is currently in stock with valid weblinks provided for easy access to additional information.

The Germanium material used in this window is known as Germanium Burnett, a specific type of germanium that offers excellent transmission properties in the mid-infrared region. The window's thin lens shape and circular base geometry make it a versatile option for various optical systems.

This window is a part of the Window sub-type and Flat Window category, indicating its primary function as a simple, non-refracting optical component. Despite its simplicity, the 89-564 offers significant benefits, including protection for more sensitive optical elements, and the potential to reduce surface reflections and improve overall system performance.