ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,990, issued on July 8, was assigned to CANON K.K. (Tokyo).
"Optical filter and image capturing apparatus" was invented by Yoshiaki Irie (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical filter comprises at least one optical member that transmits light, wherein a first optical film that reflects at least one of light in a longer wavelength band than a first wavelength and light in a shorter wavelength band than a second wavelength is formed on a first surface, and a second optical film that reflects at least one of light in a longer wavelength band than a third wavelength and light in a shorter wavelength band than a fourth wa...