A metasurface optic, designed for short-wave infrared (SWIR) range devices, is formed of one or more unit cells with a specific arrangement of truncated cone-shaped subwavelength nanostructures, tailored to achieve various optical functionalities. The one or more unit cells are formed from a design set selected from among multiple different design sets, each of the multiple different design sets featuring truncated cones having a unique combination of height (800 nm to 1100 nm), sidewall angle (91° to) 93°, and pitch (550 nm to 750 nm), with base radius values of the truncated cones within a given design set varying from 75 nm to 250 nm in 1 nm increments.