(of a lens) with one surface plane and the opposite one convex.
（镜头）平凸的
Example sentencesExamples
Radiation characteristics of a plano-convex lens are studied using Maslov's method, stressing the evaluation of an electromagnetic field around a caustic region when a uniform plane wave is incident axially to the flat plate side.
Here is a diagram of light passing through the curved edge of a planoconvex lens.