US Patent Issued to Canon on July 7 for "Optical system and image pickup apparatus having the same" (Japanese Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,961, issued on July 7, was assigned to Canon K.K. (Tokyo).

"Optical system and image pickup apparatus having the same" was invented by Takashi Ode (Tochigi, Japan) and Takahiro Hatada (Tochigi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having positive refractive power, a third lens unit, a fourth lens unit having positive refractive power, and a fifth lens unit having negative refractive power. During focusing from infinity to a close distance, a distance between adjacent lens units changes and t...