Title:
LENS CURVATURE VARIATION APPARATUS FOR VARYING LENS CURVATURE USING SENSED TEMPERATURE INFORMATION
Document Type and Number:
WIPO Patent Application WO/2019/124662
Kind Code:
A1
Abstract:
The present invention relates to a lens curvature variation apparatus using sensed temperature information. The lens curvature variation apparatus according to an embodiment is a lens curvature variation apparatus for varying a curvature of a liquid lens which is variable based on an applied electrical signal and includes a lens driver to apply an electrical signal to the liquid lens, a sensor unit to sense the curvature of the liquid lens formed based on the electrical signal, a temperature sensing unit to sense a temperature of a periphery of the liquid lens, and a controller to control the lens driver to form a target curvature of the liquid lens based on the sensed curvature, wherein the controller controls the lens driver to output a changed electrical signal to the liquid lens to form the target curvature, based on the sensed temperature. Thereby, the curvature of the lens can be sensed quickly and accurately using the sensed temperature information.
Inventors:
SONG SEUNGHEUN (KR)
JEONG JAEHOON (KR)
YOUN YELIM (KR)
LEE JONGYEON (KR)
JEONG JAEHOON (KR)
YOUN YELIM (KR)
LEE JONGYEON (KR)
Application Number:
PCT/KR2018/008208
Publication Date:
June 27, 2019
Filing Date:
July 20, 2018
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
G02B3/14; G02B26/00; H04N5/225; H04N5/232
Foreign References:
| US20080062529A1 | 2008-03-13 | |||
| US20090185280A1 | 2009-07-23 | |||
| US20100014167A1 | 2010-01-21 | |||
| US20050041301A1 | 2005-02-24 | |||
| US20160201699A1 | 2016-07-14 | |||
| US20080062529A1 | 2008-03-13 | |||
| US20120261474A1 | 2012-10-18 | |||
| US20100014167A1 | 2010-01-21 |
Other References:
See also references of EP 3729149A4
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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