Ultra-wide angle broadband polarization imaging system based on metasurface, and detection apparatus

US12228710B1 · kind B1 · utility

Assignee

• Institute of Optics and Electronics, Chinese Academy of Sciences · CN

Inventors

• Xiangang Luo · Fremont, US
• Mingbo Pu · Chengdu, CN
• Ting Xie · Burtonsville, US
• Fei Zhang · Tianjin, CN
• Xiaoliang Ma · Port Matilda, US

Key dates

• Filing date: Nov 16, 2022
• Grant date: Feb 18, 2025
• Expiry date: Nov 16, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B13/14
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An ultra-wide angle broadband polarization imaging system based on a metasurface, and a detection apparatus, the imaging system comprising a first lens (L1) having negative optical power, a linear polarizer (P1), a quarter wave plate (P2), a diaphragm (STO), a second lens (L2) having positive optical power, a third lens (L3) having positive optical power, and the metasurface (M), wherein an object side surface and an image side surface of the lens are planar or spherical; and the phase distribution required for the system in a broadband spectrum band is achieved by setting different rotation angles θ of a unit structure of the metasurface.