ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,772, issued on July 29, was assigned to FUJIFILM Corp. (Tokyo).
"Objective optical system for endoscope and endoscope" was invented by Tomoyuki Baba (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An objective optical system for an endoscope consisting of, in order from an object side toward an image side: a front group having negative focal power; an aperture stop; and a rear group having positive focal power, wherein: the front group includes only three lenses, which consist of, in order from the object side toward the image side: a first lens having negative focal power; a second lens having negative focal power; and a third lens h...