ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,754,349, issued on Oct. 6, was assigned to Intel Corp. (Santa Clara, Calif.).

"Sub-surface compound microlenses" was invented by Nicholas Psaila (Lanark, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Photonic devices, packages, and systems with sub-surface compound microlenses are disclosed. An example microlens structure includes a glass core and a microlens stack embedded in the glass core, the stack comprising a plurality of regions stacked a direction of propagation of light that is to be manipulated by the microlens structure, wherein each region is a region of a substantially uniform refractive index that is different from the refrac...