ALEXANDRIA, Va., April 7 -- United States Patent no. 12,596,293, issued on April 7, was assigned to SHENZHEN LEQI INNOVATION Co. LTD. (Shenzhen, China).
"Light adjustment device and photography auxiliary device" was invented by Keman Yan (Shenzhen, China) and Xing Ye (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light adjustment device includes a lens head and a lens tube disposed around the lens head and slidable relative to the lens head in a first direction. A rotating assembly is rotatably mounted on one of the lens tube and the lens head. The rotating assembly is drivingly connected with the other of the lens tube and the lens head through a transmission structure, at least a portion...