US Patent Issued to Nippon Sheet Glass on Oct. 27 for "Optical filter, imaging apparatus, and optical filter manufacturing method" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,130, issued on Oct. 27, was assigned to Nippon Sheet Glass Co. Ltd. (Tokyo).

"Optical filter, imaging apparatus, and optical filter manufacturing method" was invented by Yuichiro Kubo (Tokyo) and Katsuhide Shimmo (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical filter 1 includes a frame 10 and a light-absorbing film 20. The frame 10 has a through hole 12. The light-absorbing film 20 is disposed to close the through hole 12 and includes a light-absorbing compound. An average Young's modulus of the light-absorbing film 20 measured by continuous stiffness measurement is 2.5 GPa or less."

The patent was filed on Oct. 6, 2021, ...