US Patent Issued to HAMAMATSU PHOTONICS on Oct. 7 for "Optical device" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,436,329, issued on Oct. 7, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).

"Optical device" was invented by Tsubasa Watanabe (Hamamatsu, Japan), Hiroto Sakai (Hamamatsu, Japan) and Yasushi Ohbayashi (Hamamatsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical apparatus includes an angle filter disposed on an optical path in the middle of focusing or in the middle of divergence by a focusing optical element. The angle filter includes a dielectric multilayer film in which dielectric layers having a first refractive index and dielectric layers having a second refractive index lower than the first refractive index are alternately ...