39-249 31.75 mm Dia. AR Coated Sapphire Protective Flat Window; t=1 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 by the name 39-249, is designed with a diameter of 31.75 mm and a thickness of 1 mm, making it a thin and lightweight option for various applications.

The window is made of sapphire, a material with the chemical formula al2o3, also known as aluminum oxide. Sapphire is a highly durable and scratch-resistant material, making it an ideal choice for protective windows. It also offers excellent transparency in the visible and near-infrared regions of the spectrum, from 400 to 1000 nm, making it suitable for a wide range of optical systems.

The window features anti-reflective (AR) coatings on both the front and back surfaces. The coating, identified as edm visnir0sp2002000, is specifically designed to reduce reflection in the visible and near-infrared regions, enhancing the transmission of light through the window. This coating ensures optimal performance of the optical system by minimizing losses due to reflection.

In terms of geometry, the window is circular and shaped as a thin lens. This shape allows for easy integration into various optical systems, providing protection without significantly altering the optical path.

The window's information page, which can be found at https://www.edmundoptics.com/p/3175mm-diameter-vis-nir-ar-coated-sapphire-window/40138/, is currently valid and indicates that the product is in stock, ensuring quick delivery upon order.