公开(公告)号：US20250110318A1

公开(公告)日：2025-04-03

申请号：US18826130

申请日：2024-09-05

Applicant: SHENZHEN METALENX TECHNOLOGY CO.,LTD

Inventor： Xiaobo Zhao ,  Ziliang ZHAO ,  Chenglong HAO ,  Fengze TAN ,  Jian ZHU

IPC: G02B13/00 ,  G02B1/00 ,  G02B3/00

Abstract: An optical system and an optical camera working at a far-infrared waveband are provided, the optical system including three optical elements, the three optical elements being, along the optical axis in order from an object side to an image side: a first sulfur refractive lens, a metalens and a second sulfur refractive lens; the first sulfur refractive lens and the second sulfur refractive lens have positive refractive power; each of three optical elements including an object-side surface facing towards the object side and an image-side surface facing towards the image side; the metalens includes a substrate and a plurality of unit cells, and a plurality of nanostructures are set in the unit cells; the optical system satisfies the following condition with a unit of 1/mm: 0.25 ≤ n * ( ❘ "\[LeftBracketingBar]" C 1 ❘ "\[RightBracketingBar]" + ❘ "\[LeftBracketingBar]" C 2 ❘ "\[RightBracketingBar]" ) ≤ 2 ⁢ .01 .