This is a Plano-Convex lens, a type of spherical lens, sourced from Holmarc Opto-Mechatronics. The lens has a base shape of a circle and a diameter of 50mm. The thickness of the lens at the edge is 3mm, and it has an effective focal length (EFL) of 400mm. The lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties.
The lens is designed to work with a wavelength of 587.6nm. It comes with a front and back Broadband Anti-Reflection (BBAR) coating, specifically designed for the wavelength range of 400-700nm. This coating helps to reduce reflection and increase transmission, enhancing the overall performance of the lens.
The lens is currently in stock and available for purchase. For more information, please refer to the vendor's website.