ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,984, issued on April 22, was assigned to Pacific Light & Hologram Inc. (San Gabriel, Calif.).
"Optical measurements" was invented by Kamran Qaderi (San Gabriel, Calif.), David Joseph Harper (Ames, Iowa) and Jonathan Seamus Blackley (South Pasadena, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, apparatus, devices, subsystems, and systems for optical measurements are provided, e.g., precise measurement of a geometry of an element such as an angle of an object, a refractive index of a substance, or surface roughness of an uneven surface. In one aspect, a method includes: illuminating light on an object having a first surface extending a...