ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,254, issued on Sept. 1, was assigned to AAC OPTICS (CHANGZHOU) Co. LTD. (Changzhou City, China).
"Microscope objective" was invented by Shiqi Pan (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A microscope objective, including from an exit pupil plane to an object plane: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, and a fifth lens having a positive refractive power; a focal length of the microscope objective is f, a focal length of the first lens is f1, a focal length of the secon...