ALEXANDRIA, Va., May 5 -- United States Patent no. 12,616,367, issued on May 5, was assigned to Canon K.K. (Tokyo).
"Optical system and inspection apparatus" was invented by Hiroto Kano (Tochigi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system is configured to guide light from a light source to a first target and a second target, and to guide first reflected light from the first target and second reflected light from the second target to an image sensor. The optical system includes a first optical element having a conical surface. An intermediate image is formed between the first optical element and each of the first target and the second target. The first reflected light and the secon...