SLB-06-20P 6.0 mm Dia. x 20.0 mm FL; Plano-Convex Lens Uncoated

The SLB-06-20P is a 6.0 mm diameter, plano-convex lens with a focal length of 20.0 mm, sourced from OptoSigma. This lens is made of n-BK7 Schott glass, a popular material for its high refractive index and low dispersion. The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties or protect it from environmental factors.

The lens's geometry is characterized by its diameter, thickness, and radii. The diameter is 6.0 mm, and the edge thickness is 1.0 mm, while the center thickness is 1.4 mm. The radius of curvature for the convex surface is 10.38 mm, and the back focal length is 19.1 mm. The lens's effective focal length (EFL) is 20.0 mm. The inner and outer radii are both 0 mm, indicating a flat surface on the opposite side of the convex surface.

This lens is designed for use at a wavelength of 546.1 nm. Its spherical shape makes it suitable for a wide range of optical applications. However, its uncoated surface may lead to higher reflectivity and susceptibility to environmental damage, so it may not be ideal for all use cases.