US 12,487,430 B2
Lens device
Guo-Quan Lin, ShenZhen (CN)
Assigned to SINTAI OPTICAL (SHENZHEN) CO., LTD., Shenzhen (CN); and ASIA OPTICAL CO., INC., Taichung (TW)
Filed by Sintai Optical (Shenzhen) Co., Ltd., ShenZhen (CN); and Asia Optical Co., Inc., Taichung (TW)
Filed on Sep. 26, 2022, as Appl. No. 17/952,536.
Claims priority of application No. 202111166496.6 (CN), filed on Sep. 30, 2021.
Prior Publication US 2023/0097275 A1, Mar. 30, 2023
Int. Cl. G02B 7/02 (2021.01); G02B 7/04 (2021.01)
CPC G02B 7/04 (2013.01) 19 Claims
OG exemplary drawing
 
1. A lens device, comprising:
a base;
a lens module disposed in the base and comprising at least one movable lens group that is movable in a first direction;
a driving device configured to drive the movable lens group to move;
a plurality of positioning elements spaced in the first direction and fixed to the base;
a dragging element put around the positioning elements; and
a counterweight block;
wherein the counterweight block and the movable lens group are connected to the dragging element;
wherein the base comprises a side wall;
wherein the driving device comprises a magnet and a coil;
wherein the magnet is fixed to one of the movable lens group and the side wall of the base, and the coil is fixed to the other of the movable lens group and the side wall of the base.