US 12,066,640 B2
Lens moving apparatus
Sang Ok Park, Seoul (KR); Byung Wook Son, Seoul (KR); Kyoung Ho Yoo, Seoul (KR); and Jun Taek Lee, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Filed by LG INNOTEK CO., LTD., Seoul (KR)
Filed on Sep. 27, 2021, as Appl. No. 17/449,065.
Application 17/449,065 is a continuation of application No. 16/241,346, filed on Jan. 7, 2019, granted, now 11,156,851.
Application 16/241,346 is a continuation of application No. 15/005,122, filed on Jan. 25, 2016, granted, now 10,216,000, issued on Feb. 26, 2019.
Claims priority of application No. 10-2015-0011214 (KR), filed on Jan. 23, 2015.
Prior Publication US 2022/0011591 A1, Jan. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/64 (2006.01); G02B 7/08 (2021.01); H04N 23/68 (2023.01)
CPC G02B 27/646 (2013.01) [G02B 7/08 (2013.01); H04N 23/687 (2023.01)] 19 Claims
OG exemplary drawing
 
1. A lens moving apparatus comprising:
a cover member;
a housing disposed in the cover member;
a bobbin disposed in the housing;
a first coil and a magnet disposed in the cover member and configured to move the bobbin in an optical axis direction by an interaction between each other;
an elastic member comprising an inner frame coupled with the bobbin, an outer frame coupled with the housing, and a frame connection part connecting the inner frame and the outer frame;
a sensing magnet disposed on the bobbin; and
a first position sensor disposed opposite to the sensing magnet and configured to detect a movement in the optical axis direction of the bobbin,
wherein a width of the frame connection part is at least two times greater than a thickness of the elastic member,
wherein a first input signal is applied to the first coil,
wherein the first position sensor is configured to output a first output signal,
wherein a primary resonant frequency of first frequency response characteristics is in a range of 30 Hz to 200 Hz, and
wherein the first frequency response characteristics are related to gain of a first transfer function,
wherein the first transfer function is defined by Equation (1),

OG Complex Work Unit Math
wherein H stands for the first transfer function, AFO stands for the first output signal of the first position sensor, and AFI stands for the first input signal applied to the first coil.