39-247 12.7 mm Dia. AR Coated Sapphire Protective Flat Window; t=3.2 mm VIS-NIR 400-1000nm

This product is a high-quality protective flat window offered by Edmund Optics, a renowned vendor in the optical industry. The window, identified as item number 39-247, boasts a diameter of 12.7 mm and a thickness of 3.2 mm, making it a robust and durable option for various applications.

The window is made of sapphire, a material with the chemical formula al2o3, also known as aluminum oxide. Sapphire is prized for its exceptional hardness, second only to diamond, and its excellent resistance to scratching and environmental damage. This makes it an ideal choice for protective windows exposed to harsh conditions.

The window features an Anti-Reflective (AR) coating, specifically the edm visnir0sp2002000 coating, on both the front and back surfaces. This coating is designed to minimize reflections and increase transmission in the visible and near-infrared (VIS-NIR) range, specifically between 400 and 1000 nm. This property is crucial in applications where maximum light transmission is required, such as in imaging systems, spectroscopy, and other optical instruments.

The window's geometry is that of a thin lens, although its primary function is to protect rather than focus or diverge light. Despite this, the lens shape allows for easy integration into optical systems that require a protective barrier without significantly altering the light path.