US Patent Issued to HOYA LENS THAILAND on June 2 for "Mold manufacturing method, optical member manufacturing method, and spectacle lens" (Japanese Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,645,098, issued on June 2, was assigned to HOYA LENS THAILAND LTD. (Pathumthani, Thailand).

"Mold manufacturing method, optical member manufacturing method, and spectacle lens" was invented by Shigeki Ookubo (Tokyo) and Takako Ishizaki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a mold manufacturing method, including: preparing a glass mold formed of a glass material, as a molding mold for manufacturing an optical member having convex defocus portions on at least one of optical surfaces (S11); and irradiating a surface of the glass mold for forming the optical surface, with a short-pulse laser beam to form concave portions cor...