Title:
LENS CURVATURE VARIATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/054750
Kind Code:
A1
Abstract:
A lens curvature variation apparatus according to an embodiment comprises: a liquid lens including a common electrode and a plurality of individual electrodes; a lens driver for applying a voltage to the common electrode and the plurality of individual electrodes; a sensor for detecting an interface of the liquid lens; an AD converter for converting an analog signal, output from the sensor and corresponding to the interface, into a digital signal; and a controller for controlling the lens driver on the basis of a signal output from the AD converter, wherein the plurality of individual electrodes include a first group and a second group each including two or more individual electrodes, the sensor includes a first sensor connected to a first individual electrode from among the first group of individual electrodes and a second sensor connected to a second individual electrode from among the second group of individual electrodes, and the controller includes a controller for controlling the lens driver to adjust a voltage applied to each of the individual electrodes included in the first group and second group on the basis of the signal output from the AD converter.
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Inventors:
KIM CHANG WOOK (KR)
Application Number:
PCT/KR2020/012588
Publication Date:
March 25, 2021
Filing Date:
September 17, 2020
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
G02B7/09; G02B3/14; G02B26/00
Domestic Patent References:
| WO2018187578A2 | 2018-10-11 |
Foreign References:
| US20190109536A1 | 2019-04-11 | |||
| US20190244574A1 | 2019-08-08 | |||
| JP2007531048A | 2007-11-01 | |||
| KR101821189B1 | 2018-01-23 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
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