N-BK7 Plano-Convex Spherical Lens Ø9.0 mm f = 12 mm Uncoated

Plano-convex lenses can focus a collimated beam or collimate light from a point source. To minimize the introduction of spherical aberration, a collimated light source should be incident on the curved surface of the lens when being focused and a point light source should be incident on the planar surface when being collimated.