This is a Plano-Convex lens, sourced from Edmund Optics, with a diameter of 25.4mm and a focal length of 50.8mm. The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost.
The lens features a YAG-BBAR coating on both the front and back surfaces, which is designed to enhance transmission in the 500-1100nm wavelength range. This coating reduces reflection and increases the amount of light that passes through the lens, making it ideal for use in a variety of applications, including laser systems and optical imaging.
The lens has a spherical shape, with a radius of curvature of 26.25mm on the convex side. The center thickness of the lens is 5mm, while the edge thickness is 1.72mm. The back focal length is 47.5mm, and the effective focal length is the same as the focal length at 50.8mm.
According to the vendor's website, this lens is in stock, making it readily available for immediate use. The detailed specifications and the availability of the lens make it a reliable choice for users looking for a high-quality, YAG-BBAR coated Plano-Convex lens.