Apple has filed for a patent (number US 20250028179 A1) for “lens mounting structures for head-mounted devices.” It involves ...

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.

The bifocal lenses are made from bilayer structures of liquid crystal (LC) cells and LC polymer. These lenses split light with a left-handed circular polarization (LCP) into two focused light ...

enabling a variety of optical functions that would otherwise be performed by lenses, polarizers, or gratings. On the other hand, switchable polymers are plastics whose properties—such as the ...