This is a Plano-Convex lens, type Spherical, with a circular base shape, sourced from the renowned optical vendor, Edmund Optics. The lens is designed for use in the Near-Infrared II (NIR II) spectrum, specifically for the wavelength of 587.6nm.
The lens has a diameter of 25.4mm and a thickness at the edge of 1.69mm. The center thickness is 6.9mm, and the effective focal length (EFL) is 35mm. The radius of curvature for the first surface (R1) is 18.09mm, and the back focal length (BFL) is 30.46mm. The lens does not have an inner or outer radius.
The lens is made of N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. It is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces, ensuring optimal performance in the NIR II spectrum, specifically between 750-1550nm.
This lens is in stock and available for immediate purchase. For more information, please refer to the vendor's website at https://www.edmundoptics.com/f/nir-ii-coated-plano-convex-pcx-lenses/14105/.