US Patent Issued to DISPELIX on Jan. 13 for "Manufacturing method of master template and stamp of grating of diffractive optic element, master template and stamp" (Finnish Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,916, issued on Jan. 13, was assigned to DISPELIX OY (Finland).

"Manufacturing method of master template and stamp of grating of diffractive optic element, master template and stamp" was invented by Ismo Vartiainen (Espoo, Finland) and Mikhail Erdmanis (Espoo, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A manufacturing method of a master template (20) of a grating of a diffractive optic element. A layer (250) of material (200) is deposited on a substrate (108) of the master template (180) through perforations (204) of a plate (202), cross sectional areas of the perforations (204) depending on locations of the perforations (204) in the plat...