This is a Plano-Convex Lens, sourced from the renowned optical vendor, Edmund Optics. The lens is designed for use in the Near-Infrared II (NIR II) spectrum, specifically for wavelengths between 750nm and 1550nm.
The lens has a diameter of 75.0mm and a focal length of 250.0mm, making it suitable for a wide range of optical applications. The lens is made from the high-quality material n-BK7 Schott, ensuring excellent optical performance.
The lens features a standard NIR II coating on both the front and back surfaces, which is designed to enhance its performance in the NIR II spectrum. The coating helps to reduce reflection and increase transmission, thereby improving the overall efficiency of the optical system in which the lens is used.
The geometry of the lens includes a thickness of 2.5mm at the edge and 4.94mm at the center. The lens has a front radius (R1) of 129.21mm and a back focal length (BFL) of 246.74mm. The lens is spherical in shape, which is a common and versatile lens geometry.