The 49-898 is a Plano-Convex Lens, a type of spherical lens, sourced from Edmund Optics. This lens has a base shape of a circle and a diameter of 15.0mm, making it suitable for a wide range of optical applications. The lens has a thickness of 1.4mm at the edge and 4.0mm at the center, providing a robust structure while maintaining a sleek profile.
The effective focal length (EFL) of this lens is 18.0mm, which is the distance from the lens's center to the focal point when the lens is placed in an optical system. The first radius of curvature (R1) is 12.11mm, and the back focal length (BFL) is 15.61mm, contributing to the lens's overall optical performance.
The lens is made from n-SF5 Schott, a high-quality optical material known for its excellent transmittance and chemical resistance. This material is particularly suitable for applications in the visible spectrum, as indicated by the lens's coating. Both the front and back surfaces of the lens are coated with edm vis-0 std curve, a coating specifically designed for use in the visible spectrum (425-675nm).