ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,099, issued on Dec. 30, was assigned to CARL ZEISS MICROSCOPY GMBH (Jena, Germany).

"Microscope tube" was invented by Haiyan Zheng (Shanghai) and Xiangxiang Zhang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure is directed to a microscope tube including a ocular optical path including a collecting lens, a deflecting optical system, a binocular unit and an eyepiece, wherein light emitted from an objective enters through the collecting lens and is transmitted into the binocular unit via the deflecting optical system to allow a human eye to observe by the eyepiece at a visual angle, wherein the deflecting optical system ...