First Single Metalens to focus the entire spectrum of visible light developed, can revolutionize VR

They created units of paired nanofins that control the speed of different wavelengths of light simultaneously. These paired nanofins controlling the refractive index on the metasurface, are effectively tuned, to result in different time delays for the light passing through different fins. Doing so ensures that all wavelengths reach the focal spot at the same time.
Combining two nanofins into one element, can tune the speed of light in the nanostructured material, to ensure that all wavelengths in the visible are focused in the same spot, using a single metalens. This also dramatically reduces thickness and design complexity of achromatic broadband lens compared to composite standard achromatic lenses, quoted Alexander Zhu, co-author of the study.
Elaborating further on the advantages of the breakthrough, the researchers noted that with the achromatic lens it will be possible to perform high quality, white light imaging. This they hoped would bring them one step closer to the goal of incorporating these into common optical devices such as cameras. The future prospects include- scaling up the lens, to about 1 cm in diameter which could open a whole host of new possibilities, such as applications in virtual and augmented reality. The research is published in the journal #-Link-Snipped-#.
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