US Patent Issued to OLYMPUS on Dec. 9 for "Objective optical system, optical unit, and endoscope apparatus with lenses of partially spherical shape" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,490,883, issued on Dec. 9, was assigned to OLYMPUS Corp. (Tokyo).

"Objective optical system, optical unit, and endoscope apparatus with lenses of partially spherical shape" was invented by Takehiro Miki (Tokyo) and Mitsuru Namiki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An objective optical system including a first lens and a second lens that are arranged in this order from an object side along a main optical axis, wherein the first lens has a partially spherical shape having a first flat surface, the second lens has a partially spherical shape having a second flat surface, the first flat surface is disposed on a side of the object and is in...