39-254 25.4 mm Dia. AR Coated Sapphire Protective Flat Window; t=2.3 mm NIR I 600-1050nm

This product is a 25.4 mm diameter Sapphire Flat Window, offered by the renowned optical vendor, Edmund Optics. The window, which has a thickness of 2.3 mm, is designed for use in the Near-Infrared (NIR) region, specifically between 600 and 1050 nanometers, making it suitable for a wide range of applications in this spectrum.

The window is made from Sapphire, a material with the chemical formula Al2O3, and is known for its exceptional hardness, making it highly resistant to scratches and abrasions. This makes it an ideal choice for protective windows in harsh environments.

The window features Anti-Reflective (AR) coatings on both the front and back surfaces. These coatings are designed to the standard NIR-I curve provided by Edmund Optics, which ensures high transmission and low reflection across the specified wavelength range. This is particularly beneficial in applications where maintaining high light levels is critical, such as in imaging or sensing systems.

The window is shaped as a thin lens, which can be beneficial in certain optical systems where flat windows may introduce unwanted optical path differences. However, it is important to note that this window does not introduce any focusing or diverging effects, as it is a simple flat window.