US 11,740,432 B2
Lens driving device, camera module, and camera-mounted device
Yuichi Kasahara, Tokyo (JP); and Norikazu Kudo, Tokyo (JP)
Assigned to Mitsumi Electric Co., Ltd., Tokyo (JP)
Filed by Yuichi Kasahara, Tokyo (JP); and Norikazu Kudo, Tokyo (JP)
Filed on Nov. 13, 2020, as Appl. No. 17/97,104.
Claims priority of application No. 2019-207076 (JP), filed on Nov. 15, 2019.
Prior Publication US 2021/0149152 A1, May 20, 2021
Int. Cl. G02B 7/28 (2021.01); G02B 7/09 (2021.01); G03B 3/10 (2021.01); G03B 5/02 (2021.01)
CPC G02B 7/28 (2013.01) [G02B 7/09 (2013.01); G02B 7/282 (2013.01); G03B 3/10 (2013.01); G03B 5/02 (2013.01); G03B 2205/0069 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A lens driving device comprising:
a base;
a lens holder disposed apart from the base in a light axis direction, and configured to hold a lens part; and
an autofocus driving part including an auto-focusing coil and an auto-focusing magnet, and configured to move the lens holder in the light axis direction with respect to the base,
wherein the auto-focusing coil is disposed at the lens holder,
wherein the auto-focusing magnet is disposed at the base,
wherein the base includes a magnet holding part provided to protrude to a light reception side in the light axis direction, the magnet holding part being configured to hold the auto-focusing magnet while positioning the auto-focusing magnet,
wherein the magnet holding part and the lens holder each have opposing portions that face each other in the internal and external directions perpendicular to the light axis direction, and
wherein a damper is disposed to mechanically connect the opposing portions.