ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,511, issued on March 17, was assigned to Apple Inc. (Cupertino, Calif.).

"Sag compensation for deformable lens" was invented by Richard J. Topliss (Cambridge, Great Britain), James E. Pedder (Thame, Great Britain) and Michael D. Simmonds (Ashford, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments include a sag compensation structure that may be used to compensate for gravity sag of a deformable lens membrane. In some embodiments, the sag compensation structure may be combined with a lens assembly comprising the deformable lens membrane. The sag compensation structure may include one or more sag compensation membranes ...