Eye-Controlled Soft Lens Paves Way to Soft Human-Machine Interfaces
August 5, 2019 | University of California San DiegoEstimated reading time: 1 minute

A research team led by the University of California San Diego has developed a soft robotic lens whose movements are controlled by the eyes—blink twice and the lens zooms in and out; look left, right, up or down and the lens will follow.
The lens is the first example of an interface between humans and soft machines. “The human-machine interface, as we know it, features classical machines: computers, wheelchairs, and rigid robotics, for example. The innovation here is the interface with soft robotics. This can really open up new opportunities in the field,” said Shengqiang Cai, a professor of mechanical and aerospace engineering at UC San Diego who led the research.
The prototype system responds to the electric signals generated around the eyes during movement, called electrooculographic signals. Patches of electrodes placed on the skin around the eyes measure these signals and transmit them through a signal processor to the lens.
The system is designed to mimic how the human eye works. The lens itself is made up of salt water encased within two electroactive elastomer films that act like muscles. They can expand, contract, or change their structure when an electrical potential is applied. This enables the lens to look in four directions and change its focal point. Because the lens is made of soft materials, it can change its focal length by as much as 32 percent.
Illustration and photos of the soft robotic lens.
“The idea behind this project is very generic,” Cai said. “In this demonstration, we use signals generated by eye movement to control a soft tunable lens. But in principle, we could expand this idea and use other biological signals (hand movement, heartbeat, etc.) to control soft grippers, for example. There is more potential to this technology than just one specific application or commercial product. And that is what I find truly exciting.”
Testimonial
"Your magazines are a great platform for people to exchange knowledge. Thank you for the work that you do."
Simon Khesin - Schmoll MaschinenSuggested Items
Molex Announces Agreement to Acquire Smiths Interconnect
10/17/2025 | MolexMolex, a leading global electronics connectivity innovator, announced that it has signed an agreement to acquire Smiths Interconnect.
American Standard Circuits Achieves Successful AS9100 Recertification
10/14/2025 | American Standard CircuitsAmerican Standard Circuits (ASC), a leading manufacturer of advanced printed circuit boards, proudly announces the successful completion of its AS9100 recertification audit. This milestone reaffirms ASC’s ongoing commitment to the highest levels of quality, reliability, and process control required to serve aerospace, defense, space, and other mission-critical industries.
Kodiak Assembly Solutions Renews ITAR Registration, Providing Secure and Compliant Manufacturing for Defense & Aerospace
09/25/2025 | Kodiak Assembly SolutionsKodiak Assembly Solutions LLLP, a leading electronics contract manufacturer, has successfully renewed its ITAR (International Traffic in Arms Regulations) registration.
Cyient DLM, A Voice from the Frontlines
09/24/2025 | Arpita Das, Global Electronics AssociationOnce seen as a low-cost, build-to-print destination, India’s EMS sector is rapidly emerging as a global hub for high-reliability electronics, particularly in strategic sectors like aerospace, defense, and medical. As such, we highlight some companies that exemplify the strength and potential of Indian manufacturing.
Nortech Systems Achieves Enhanced Fiber Optic Performance
09/16/2025 | Nortech SystemsNortech Systems Incorporated, a leading provider of design and manufacturing solutions for complex electromedical devices and electromechanical systems, announced significant advancements in its fiber optic capabilities.