US 11,895,402 B2
Actuator, image capturing unit and electronic device
Yu Chen Lai, Taichung (TW); Ming-Ta Chou, Taichung (TW); Liang Chieh Weng, Taichung (TW); and Ming-Shun Chang, Taichung (TW)
Assigned to LARGAN DIGITAL CO., LTD., Taichung (TW)
Filed by LARGAN DIGITAL CO., LTD., Taichung (TW)
Filed on Feb. 17, 2021, as Appl. No. 17/177,640.
Claims priority of application No. 109139687 (TW), filed on Nov. 13, 2020.
Prior Publication US 2022/0159187 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/64 (2006.01); G03B 5/02 (2021.01); H04N 5/232 (2006.01); H04N 23/68 (2023.01)
CPC H04N 23/68 (2023.01) [G02B 27/64 (2013.01); G03B 5/02 (2013.01); G03B 2205/0038 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An actuator, configured to drive an imaging lens system, and the actuator comprising:
a frame portion, configured to accommodate the imaging lens system;
a supporting portion, disposed on the frame portion, wherein the supporting portion is configured to support the imaging lens system and give the imaging lens system at least one degree of freedom of movement with respect to the frame portion;
a driving portion, configured to move the imaging lens system along a direction of the at least one degree of freedom;
an optical mark structure, disposed on part of one of the frame portion, the supporting portion and the driving portion, wherein the optical mark structure comprises a plurality of optical mark units arranged side by side, and each of the plurality of optical mark units comprises a first optical mark surface; and
an intermediate layer, disposed on the optical mark structure, wherein the intermediate layer is in physical contact with one of the imaging lens system, the frame portion, the supporting portion and the driving portion that is adjacent to the optical mark structure;
wherein an area of each of the first optical mark surfaces is A, a distance between center points of adjacent two of the first optical mark surfaces is D, and the following conditions are satisfied:
0.001[mm2]≤A≤0.5[mm2]; and
0.03[mm]≤D≤1.0[mm].