公开(公告)号：US20250138162A1

公开(公告)日：2025-05-01

申请号：US18923637

申请日：2024-10-22

Applicant: SHENZHEN METALENX TECHNOLOGY CO.,LTD

Inventor： Xiaobo ZHAO ,  Heshan LIN ,  Chenglong HAO ,  Fengze TAN ,  Jian ZHU

IPC: G01S7/481 ,  G01S17/42 ,  G01S17/894 ,  G02B1/00

Abstract: An optical system for ToF and a depth camera of ToF are provided, and the optical system including two optical elements. The two optical elements along the optical axis in order from an object side to an image side include: a filter and a metalens; each of two optical elements includes 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 on a vertex and center of the unit cells of the metalens; the optical system includes an aperture slot, and the aperture slot is set on an incident direction of an optical path of the metalens; the optical system satisfies the following condition: f D ≤ 1.2 ; f is a focal length of the optical system, and D is an entrance pupil diameter of the optical system.

公开(公告)号：US20250130409A1

公开(公告)日：2025-04-24

申请号：US18915356

申请日：2024-10-15

Applicant: SHENZHEN METALENX TECHNOLOGY CO.,LTD

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

IPC: G02B13/00 ,  G02B7/02 ,  G03B17/12

Abstract: An optical system and an optical camera working at a far-infrared waveband are provided. The optical system includes two optical elements, the two optical elements being, along the optical axis in order from an object side to an image side: a metalens and a refractive lens; each of two optical elements including an object-side surface facing towards the object side and an image-side surface facing towards the image side; the metalens including a substrate and a plurality of nanostructures, and the plurality of nanostructures are set on the image-side surface of the metalens; when a light passes through the image-side surface of the metalens, the incident angle of the light is less than or equal to 45°; the object-side surface of the refractive lens is a concave surface, and the image-side surface of the refractive lens is a convex surface; and the refractive lens has positive refractive power.