US 12,353,047 B2
Optical system
Pai-Jui Cheng, Taoyuan (TW); Chao-Chang Hu, Taoyuan (TW); Shu-Shan Chen, Taoyuan (TW); Hsiao-Hsin Hu, Taoyuan (TW); and Chieh-An Chang, Taoyuan (TW)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on May 9, 2022, as Appl. No. 17/739,761.
Claims priority of provisional application 63/186,496, filed on May 10, 2021.
Prior Publication US 2022/0357555 A1, Nov. 10, 2022
Int. Cl. G02B 7/08 (2021.01); G02B 7/00 (2021.01); G02B 7/02 (2021.01); G02B 7/09 (2021.01); G02B 15/14 (2006.01); G02B 27/64 (2006.01); G03B 3/10 (2021.01); G03B 5/02 (2021.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01)
CPC G02B 7/08 (2013.01) [G02B 7/005 (2013.01); G02B 7/021 (2013.01); G02B 7/022 (2013.01); G02B 7/023 (2013.01); G02B 7/09 (2013.01); G02B 15/142 (2019.08); G02B 27/646 (2013.01); G03B 3/10 (2013.01); G03B 5/02 (2013.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); G03B 2205/0061 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical system, comprising:
a fixed portion;
a first movable portion connected to a first optical element, wherein the first movable portion is movable relative to the fixed portion;
a first driving assembly driving the first movable portion to move relative to the fixed portion;
a second movable portion connected to a second optical element, wherein the second movable portion is movable relative to the fixed portion and the first movable portion; and
a second driving assembly driving the second movable portion to move relative to the first movable portion;
wherein the first driving assembly provides a first driving force via a first piezoelectric unit, and the first movable portion is driven by the first driving force to move relative to the fixed portion;
wherein:
the first movable portion and the second movable portion are arranged along an optical axis;
the first movable portion is movable within a first range of motion relative to the fixed portion;
the second movable portion is movable within a second range of motion relative to the fixed portion, wherein the second range of motion is different from the first range of motion; and
the second movable portion is movable within a third range of motion relative to the first movable portion.