US 12,177,549 B2
Camera system and shape memory alloy motor
Xin Li, Shenzhen (CN); Gang Wang, Dongguan (CN); and Wei Tang, Dongguan (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Appl. No. 17/780,899
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Nov. 11, 2020, PCT No. PCT/CN2020/128035
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/104017, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911209202.6 (CN), filed on Nov. 30, 2019.
Prior Publication US 2023/0022701 A1, Jan. 26, 2023
Int. Cl. H04N 23/55 (2023.01); H02K 41/035 (2006.01); H04N 23/54 (2023.01); H04N 23/57 (2023.01)
CPC H04N 23/55 (2023.01) [H02K 41/0354 (2013.01); H04N 23/54 (2023.01); H04N 23/57 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A camera system comprising:
a frame;
a lens comprising an out-light side and having an optical axis;
an image sensor disposed on the out-light side; and a shape memory alloy (SMA) motor fastened to the image sensor and positioned such that the image sensor is located between the lens and the SMA motor, and comprising:
an upper motor component comprising a side distal from the image sensor, wherein the image sensor is fastened to the upper motor component;
a lower motor component located on the side of the upper motor component distal from the image sensor;
a plurality of holds, wherein the holds are disposed between the lower motor component and the upper motor component, wherein a first end of each of the holds is affixed to the lower motor component, and wherein a second end of each of the holds is slidably connected to the upper motor component; and
four SMA cables, wherein one end of each of the SMA cables is fastened to the upper motor component and the other end of each of the SMA cables is fastened to the lower motor component, wherein the SMA cables are configured to shrink when being electrified and heated, wherein the SMA cables are arranged in two pairs symmetrically disposed relative to a first reference plane, wherein two of the SMA cables of a same pair are symmetrically disposed relative to a second reference plane, and wherein both the first reference plane and the second reference plane are traversed by the optical axis.