Future VR headsets could use a new type of lens inspired by holographic devices. The bilayer bifocal lens relies on external voltage to change the intensities in the foci.
Future virtual reality headsets could use a new type of lens inspired by holographic devices, researchers in China say. This proposed new type of bifocal lens can switch between one focus and another at the flick of a switch, letting wearers witness intensities in the lenses change akin to a hologram.
The technology could be applied in imaging devices, optical computing and optical interconnectivity — in addition to future mixed-reality and VR headsets, the team said. The team focused on creating bilayer structures, rather than single-layer structures, which most liquid-crystal devices are made from. The structures were made from a liquid crystal cell as well as a liquid crystal polymer — both of which are standard materials in the development of lenses intended for holographic imaging uses. This let researchers alter the intensity of the two foci.
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