This is the HO-BVL50-10C 50mm Dia. N-BK7 Double-Concave Lens, a high-quality optical component sourced from Holmarc Opto-Mechatronics. This lens is a part of their extensive catalog of optical elements, designed to cater to a wide range of optical simulation needs.
The lens is a Spherical Lens of the Sub Type Spherical Lens (Concave-Concave), featuring a Base Shape of Circular. The geometry of the lens includes a diameter of 50mm, a center thickness of 2.5mm, and an Effective Focal Length (EFL) of -500mm. The lens's first radius of curvature (R1) is -522.248979mm, while the second radius of curvature (R2) is 522.248979mm. The lens does not have an Inner Radius or an Outer Radius.
The lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties. The lens is coated with a single layer of MgF2 on both the front and back surfaces, which is indicated by the coating specification 'hol mgf2 0 aoi'. This coating enhances the lens's performance by reducing surface reflections and improving transmission.
The lens is designed to operate at a wavelength of 587.6nm. The item data does not provide information about the lens's clear aperture or its surface quality, which are important factors to consider when selecting a lens for your application.