US Patent Issued to TOKAI OPTICAL on Nov. 3 for "Optical product and optical product manufacturing method" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,782,612, issued on Nov. 3, was assigned to TOKAI OPTICAL Co. LTD. (Okazaki, Japan).

"Optical product and optical product manufacturing method" was invented by Keiji Nishimoto (Okazaki, Japan) and Chiaki Inoue (Okazaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical product includes a base, and an optical film formed on a film-formation surface thereof. The optical film has an Al2O3 layer made of Al2O3 and disposed on the base side, and an SiO2 layer made of SiO2 and having a minutely uneven structure. The method for manufacturing the optical product includes forming, on the base, an Al-based manufacture intermediate film made of aluminiu...