Apparatus and associated methods relate to using a metasurface optical lens (38) to split a narrow-band portion of the multichromatic light passing through an optical lens stack (36). The optical lens stack (36) is aligned along an optical axis and is configured to focus multichromatic light passing therethrough onto a target imaging region of a focal plane array (30), thereby forming a multichromatic image of a scene aligned with the optical axis. The metasurface optical lens (38) directs the split-off narrow-band portion of the multichromatic light to a laser designator imaging region of the focal plane array (30), thereby forming a narrow-band image of the scene aligned with the optical axis. Use of a metasurface optical lens (38) within the optical lens stack provides the creation of two images corresponding to two non-overlapping frequency bands of light to be formed using one optical lens stack (36).