Samsung Electronics and POSTECH publish achromatic metalens paper in 'Nature'

Samsung Electronics announced on the 25th that a research paper on 'achromatic aberration metalens' conducted through industry-academic cooperation with POSTECH was published in the world-renowned academic journal 'Nature Materials'.



A metalens is a flat lens composed of nano-sized structures that can control the diffraction of light. It has been receiving attention as a next-generation element in the optical system field such as displays and cameras, and various studies have been conducted in the industry for over 10 years.



Researchers at POSTECH are experimenting with an achromatic aberration metalens. [Photo = Samsung Electronics]



In particular, it has the advantage of being able to drastically reduce size and thickness compared to existing convex optical lenses. However, there was a technical limitation that the image was seriously distorted due to large chromatic aberration, making it difficult to develop actual products.



Chromatic aberration is a phenomenon in which when light passing through a lens is refracted, different wavelengths of light are bent in different directions due to different refractive indices, causing the color of the image to blur.



To improve this phenomenon, the Samsung Electronics and POSTECH research team recently succeeded in developing an 'achromatic aberration metalens' without chromatic aberration. It was also proven that various optical aberrations can be compensated for when combined with a holographic display.



Combining an achromatic aberration metalens and a 'holographic display' will enable the development of XR wearable devices that provide compact yet high-quality images, and it is expected that they will be able to be used in a wider range of cameras and sensors.



This project was led by Dr. Seok-il Moon of Samsung Electronics' Samsung Research and Professor Jun-seok Noh of POSTECH. Researchers Min-seok Choi, Joo-hoon Kim, and Gil-su Shin of POSTECH participated as co-first authors.



Samsung Electronics stated, "We plan to continue researching innovative technologies that will lead the future."





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