Auto focus (AF) method and system for electro-hydraulic (EH) lens with adjustable focus, and an electronic device

US12368952B2 · kind B2 · utility

Assignees

• Jining University · CN
• SHANGHAI UNIVERSITY · CN

Inventors

• Jun Liu · Shanghai, CN
• Hengyu Li · Shanghai, CN
• Yunyun Jiang · Shanghai, CN
• Jingyi Liu · Shanghai, CN
• Yueying WANG · Tianjin, CN
• Shaorong Xie · Shanghai, CN
• Jun Luo · Chongqing, CN

Key dates

• Filing date: Dec 8, 2023
• Grant date: Jul 22, 2025
• Expiry date: Mar 17, 2044

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V2201/07
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

The present disclosure provides an auto focus (AF) method and system for an electro-hydraulic (EH) lens with an adjustable focus, and an electronic device, and relates to the field of lens focusing technologies. The method mainly includes: determining a state space, an action space, and a reward function of a reinforcement learning (RL) method; constructing sample data based on the foregoing determined state space, action space, and reward function, and storing the sample data in an experience pool; and using sample data in the experience pool as training data of a deep neural network (DNN) architecture when there are M sets of the sample data in the experience pool, and obtaining a trained AF policy with reference to a deep deterministic policy gradient (DDPG) algorithm and a single hill climbing optimization (HCO) algorithm.