This is a G311382331 12.7 mm diameter N-BK7 double-convex lens, with a focal length (EFL) of 20mm. The lens is sourced from Qioptiq Photonics, a renowned vendor in the field of precision optics.
The lens is of the spherical type, specifically a convex-convex lens, with a base shape of a circle. The diameter of the lens is 12.7mm, and it has a center thickness of 3mm and an edge thickness of 0.9mm. The inner and outer radii are 0, indicating a symmetrical lens.
The lens is made of N-BK7, a popular glass type in the optical industry, known for its excellent optical properties. The lens is designed to operate at a wavelength of 587.6nm.
The lens features a coating on both the front and back surfaces. The coating is Qio AR Lavis AOI 45, which is designed to reduce reflection and improve transmission.
This lens is a great option for applications that require a high-quality, double-convex lens with a specific focal length and diameter. It is currently in stock and available for purchase through the provided weblink.