US Patent Issued to Canon on June 30 for "Optical system and display apparatus" (Japanese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,681, issued on June 30, was assigned to Canon K.K. (Tokyo).

"Optical system and display apparatus" was invented by Kazuto Ishida (Tochigi, Japan), Yu Miyajima (Tochigi, Japan), Keigo Yarita (Tokyo) and Yuma Kobayashi (Tochigi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes, in order from a pupil surface to a display surface, a front group having a first lens with positive refractive power, and a rear group having multiple lenses. The rear group includes a first transmissive reflective surface nearest the pupil surface and a second transmissive reflective surface nearest the display surface. The optical system satisfi...