Researchers have developed a spiral-shaped lens that maintains clear focus at different distances in varying light conditions. The new lens works much like progressive lenses used for vision correction but without the distortions typically seen with those lenses.
It could help advance contact lens technologies, intraocular implants for cataracts and miniaturized imaging systems.
"In addition to ophthalmology applications, the simple design of this lens could greatly benefit compact imaging systems," said Simon."It would streamline the design and function of these systems while also offering a way to accomplish imaging at various depths without additional optical elements.
The researchers are now working to better understand the unique optical vortices produced by their lens. They also plan to perform systematic trials of the lens' ability to correct vision in people to comprehensively establish its performance and advantages in real-world conditions. In addition, they are exploring the possibility of applying the concept to prescription eyeglasses, which could potentially offer users clear vision across multiple distances.
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