Ray tracing-based design and optimization of F-theta metalens

A Metalens-based F-theta optical system design is proposed, which is optimized in ray-tracing-based software, Ansys Zemax Optic Studio. The design consists of an aperture and a metalens on both sides of the fused silica substrate, with a total length of the system of 2mm and an effective focal length of 2.45mm at a working wavelength of 890nm, making the system suitable for compact imaging and sensing systems for near-IR.