Folded lens system Strategically positioned metasurfaces fold the light trajectory diagonally within a glass substrate, maintaining optical paths while significantly reducing the lens thickness. (Courtesy: Y Kim and T Choi © Seoul National University College of Engineering) A research team headed up at Seoul National University has pioneered an innovative metasurface-based You’ve reached the limit of what you can view on Physics World without registering If you already have an account on Physics World, then please sign in to continue reading If you do not yet have an account, please register so you can Access more than 20 years of online content Choose which e-mail newsletters you would like to receive Want to read more? Registration is free, quick and easy Note: The verification e-mail to complete your account registration should arrive immediately. However, in some cases it takes longer. Don't forget to check your spam folder. If you haven't received the e-mail in 24 hours, please contact customerservices@ioppublishing.org. E-mail Address
Optics & Photonics Briefing This issue explores lasers and detectors, solar power, medical imaging and high-resolution displays
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