US Patent Issued to GUANGDONG SIRUI OPTICAL on Oct. 27 for "Monocular with adjustable magnification" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,157, issued on Oct. 27, was assigned to GUANGDONG SIRUI OPTICAL Co. LTD (Zhongshan, China).

"Monocular with adjustable magnification" was invented by Jie Li (Zhongshan, China) and Kunyi Lin (Zhongshan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the invention disclose a variable-magnification monocular, comprising an objective lens group, a prism group and an eyepiece group arranged in sequence along an optical axis direction, wherein the eyepiece group comprises an eyepiece compensation group, an eyepiece variable-magnification group and an eyepiece fixing group arranged in sequence; the focal lengths of all lens groups satisfy ...