ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,680, issued on Sept. 30, was assigned to SCREEN Holdings Co. Ltd. (Kyoto, Japan).

"Objective lens unit and microscope" was invented by Yuya Kimura (Kyoto, Japan), Mitsuhiro Yabu (Kyoto, Japan) and Yusuke Mori (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An objective lens unit includes an objective lens, a first rotary member, a second rotary member, and a drive section. The objective lens is provided with a correction ring. The first rotary member is mounted on the objective lens. The second rotary member engages with the first rotary member. The first rotary member has a first engagement portion. The second rotary member has a seco...