A flexible lens controlled by light-activated artificial muscles promises to let soft machines see - Robohub

Researchers at Georgia Institute of Technology have developed a flexible, adaptive lens inspired by the human eye, designed to provide vision capabilities for soft robots and biomedical devices. This photo-responsive hydrogel soft lens (PHySL) uses light-activated, water-based polymer “muscles” to change its shape and focal length without mechanical parts or electronics. Unlike traditional camera lenses that rely on bulky, rigid components, the PHySL mimics the eye’s ciliary muscles by contracting in response to light, enabling precise, contactless control of focus and intensity. Its soft, compliant structure enhances durability and safety, particularly for applications involving close contact with the human body. This innovation addresses challenges in soft robotics and biomedical tools, where flexible, low-power, and autonomous systems are crucial. Soft robots, made from compliant materials, benefit from adaptable vision systems that can withstand deformation and operate without complex electronics. The PHySL’s electronics-free design contrasts with existing soft lens technologies that often require liquid-filled actuators or electronic