89-558 10 mm Dia. Germanium Protective Flat Window; t=1.5 mm BBAR 3-5µm

The 89-558 is a 10 mm diameter Germanium Flat Window, with a thickness of 1.5 mm, supplied by Edmund Optics. This protective window boasts a Broadband Anti-Reflection (BBAR) coating on both the front and back surfaces, specifically designed for the 3-5 µm wavelength range. The BBAR coating significantly reduces reflection, thereby enhancing transmission, making it an ideal choice for applications that demand high transmittance and minimal loss.

The window is fabricated from Germanium burnett, a material renowned for its excellent transmission properties in the infrared spectrum. This makes the 89-558 particularly suitable for applications in the fields of thermal imaging, spectroscopy, and other infrared-based technologies.

The 89-558 is designed in a Thin Lens shape, which is a simple lens where the thickness is much less than the radius of curvature, and the lens is essentially a flat piece of material. This design ensures minimal optical aberration, providing clear and accurate optical transmission.

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