US Patent Issued to OLYMPUS on Dec. 2 for "Objective optical system, image pickup apparatus, and endoscope" (Japanese Inventor)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,484,763, issued on Dec. 2, was assigned to OLYMPUS Corp. (Tokyo).

"Objective optical system, image pickup apparatus, and endoscope" was invented by Yasushi Namii (Hachioji, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An objective optical system includes a predetermined lens disposed near the pupil of the objective optical system. The predetermined lens has a first refractive region including an optical axis and a second refractive region located outside the first refractive region. The refractive power of the second refractive region is greater than the refractive power of the first refractive region. A light beam reaching an image plane include...