US 12,306,527 B2
Optical actuator, camera module, and camera-mounted device
Yukihiro Takimoto, Tokyo (JP); Atsushi Kikuchi, Tokyo (JP); Ichiro Hayashi, Tokyo (JP); and Yoshihiro Kimura, Tokyo (JP)
Assigned to Mitsumi Electric Co., Ltd., Tokyo (JP)
Filed by Yukihiro Takimoto, Tokyo (JP); Atsushi Kikuchi, Tokyo (JP); Ichiro Hayashi, Tokyo (JP); and Yoshihiro Kimura, Tokyo (JP)
Filed on Feb. 26, 2023, as Appl. No. 18/114,257.
Claims priority of application No. 2022-036608 (JP), filed on Mar. 9, 2022.
Prior Publication US 2023/0288776 A1, Sep. 14, 2023
Int. Cl. G03B 5/00 (2021.01); G03B 17/12 (2021.01)
CPC G03B 5/00 (2013.01) [G03B 17/12 (2013.01); G03B 2205/0084 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An optical actuator configured to move an optical element by a driving part, the optical actuator comprising:
a movable-side member configured to hold the optical element;
a fixed-side member configured to support the movable-side member such that the movable-side member is movable; and
a cushioning member disposed on the movable-side member, wherein
the cushioning member includes a first cushioning surface and a second cushioning surface that face the fixed-side member at respective different distances,
wherein:
the cushioning member is such that the first cushioning surface is capable of making contact with the fixed-side member first, and thereafter the first cushioning surface and the second cushioning surface are capable of making contact with the fixed-side member; and
after the first cushioning surface makes contact with the fixed-side member, the first cushioning surface collapses, and the second cushioning surface together with the first cushioning surface makes contact with the fixed-side member, and even thereafter, the second cushioning surface collapses.