The 88-695-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 15.0mm, is designed for use in the visible light spectrum, specifically between 350-700nm. The lens has a front and back coating of EDM VIS EXT, which is a broadband anti-reflection coating designed for visible wavelengths.
The lens has a thickness of 1.52mm at the edge and 3.8mm at the center. The effective focal length (EFL) of the lens is 20mm, which is the distance over which a collimated beam of light is focused to a spot of minimum diameter. The lens has an inner radius of 0mm and an outer radius of 0mm, indicating that it is a simple plano-convex lens without any additional curvature.
The lens is made from N-SF5 Schott, a high-index glass with excellent transmittance in the visible spectrum. The lens's front surface has a radius of curvature of 13.46mm, and the back focal length (BFL) is 17.74mm. This lens is inked, indicating that it has been marked with a unique identifier for tracking and inventory purposes.