39-391 12.7 mm Dia. Zinc Selenide Protective Flat Window; t=1 mm Uncoated

The 39-391 is a 12.7 mm diameter Zinc Selenide (ZnSe) protective flat window, with a thickness of 1 mm and no coating. This window is sourced from Edmund Optics, a reputable vendor in the optical industry.

As a flat window, this component is designed to protect optical surfaces from damage, while minimally affecting the light path. The 12.7 mm diameter makes it suitable for a wide range of applications, from precision instrumentation to industrial laser systems.

The ZnSe material is chosen for its excellent optical properties, including high transparency in the infrared region and a refractive index of 2.42 at 587.6 nm, the wavelength specified in the item data. This makes it an ideal choice for applications that require efficient transmission of infrared light.

The window is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, this also means it is less susceptible to damage from environmental factors, making it a robust choice for protective applications.