The 45-157 9mm Dia. x 36mm FL is an uncoated, double-convex lens sourced from Edmund Optics. This lens, with its spherical shape, is a type of Spherical Lens (Convex-Convex) and features a base shape of Circular geometry.
The lens has a diameter of 9mm and a thickness of 2mm at the edge, while the center thickness measures 2.55mm. The Effective Focal Length (EFL) is 36mm, and the Radius of Curvature for the first surface is 36.77mm, while for the second surface it is -36.77mm. The Back Focal Length (BFL) is 35.15mm. The lens does not have any inner or outer radius specified.
The lens is made of N-BK7 Schott material, a popular choice for its high refractive index and low dispersion. It is designed to operate at a wavelength of 587.6nm. The lens does not come with any coating, which means it is in its raw state and may not perform optimally under certain lighting conditions or applications.
Please note that the weblink provided is valid and the lens is currently in stock, making it an ideal choice for those looking for immediate availability.