US Patent Issued to Huazhong University of Science and Technology on Dec. 9 for "Meta-surface-based spectral confocal displacement measurement method, device thereof and storage medium" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,939, issued on Dec. 9, was assigned to Huazhong University of Science and Technology (Wuhan, China).

"Meta-surface-based spectral confocal displacement measurement method, device thereof and storage medium" was invented by Wenlong Lu (Wuhan, China) and Yunquan Wu (Wuhan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a meta-surface-based spectral confocal displacement measurement method. The method includes: using micro-nano structures on a meta-surface to allow different wavelengths of broadband parallel light passing through a collimating lens to have different focal lengths to obtain a focal length sequence; determining an arran...