The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 2022
Filed:
Jul. 20, 2018
Lg Innotek Co., Ltd., Seoul, KR;
Seungheun Song, Seoul, KR;
Sungoh Yang, Seoul, KR;
LG INNOTEK CO., LTD., Seoul, KR;
Abstract
The present invention relates to a lens curvature variation apparatus. 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. The lens curvature variation apparatus includes a lens driver to apply the electrical signal to the liquid lens, a sensor unit to sense the curvature of the liquid lens formed based on the electrical signal, and a controller to control the lens driver to form a target curvature of the liquid lens based on the sensed curvature, wherein the lens driver supplies the electrical signal to the liquid lens according to a switching operation of a switching element, and includes a detection element connected to one end of the switching element, wherein the sensor unit senses an electrical signal detected by the detection element. Thereby, the curvature of the lens can be sensed quickly and accurately.