ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,982, issued on April 8, was assigned to HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (Hubei, China).
"Method, device and computer-readable storage medium for obtaining complex refractive index distribution profile of film" was invented by Jinlong Zhu (Hubei, China), Zhe Yu (Hubei, China) and Wenyu Chen (Hubei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention discloses a method for obtaining the complex refractive index distribution profile of a film. S101, the interference image of the reference area and the sample under test is collected; S102, the normalized light intensity map and the optical path difference of the sample under...