This is a 35-705 2.5mm Dia. x 2.0mm FL Plano-Convex Lens, a high-quality optical component sourced from Edmund Optics. The lens is designed for use within the visible light spectrum, specifically between 350-700nm, making it suitable for a wide range of applications.
The lens is spherical in shape, with a base shape of circular. It has a diameter of 2.5mm and a thickness at the edge of 0.25mm, while the center thickness is 0.8mm. The effective focal length (EFL) of the lens is 2mm, and the radius of curvature (R1) is 1.7mm. The back focal length (BFL) is 1.57mm. The lens does not have any inner or outer radius.
The lens is made from n-lasf9 Schott, a material known for its optical properties. It comes with a VIS-EXT coating on both the front and back, which is specifically designed to enhance its performance within the visible light spectrum.
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