US 12,235,514 B2
Liquid lens control device
Chang Wook Kim, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/625,661
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Jul. 7, 2020, PCT No. PCT/KR2020/008837
§ 371(c)(1), (2) Date Jan. 7, 2022,
PCT Pub. No. WO2021/006592, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 10-2019-0082855 (KR), filed on Jul. 9, 2019.
Prior Publication US 2022/0229264 A1, Jul. 21, 2022
Int. Cl. G02B 7/04 (2021.01); G02B 3/14 (2006.01); G02B 27/64 (2006.01)
CPC G02B 7/04 (2013.01) [G02B 3/14 (2013.01); G02B 27/646 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A liquid lens control device, comprising:
a liquid lens configured to control an interface between liquids in response to a plurality of individual voltages applied to respective ones of a plurality of individual electrodes;
a controller configured to control the plurality of individual voltages; and
a compensator configured to compensate for a characteristic of at least one individual electrode among the plurality of individual electrodes,
wherein the compensator calculates a plurality of first slopes, each of the plurality of first slopes being a slope of an Analog-to-Digital Converter (ADC) value corresponding to a position of the interface between the liquids in the liquid lens with respect to the individual voltage for each of the plurality of individual electrodes, calculates a reference slope using at least two of the plurality of first slopes, and corrects at least one first slope, among the plurality of first slopes, using the reference slope, and
wherein one of the at least one first slope is a slope having a largest deviation from the reference slope.