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:
Mar. 10, 2020
Filed:
Oct. 23, 2018
Applicant:
Lg Electronics Inc., Seoul, KR;
Inventors:
Assignee:
LG ELECTRONICS INC., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/225 (2006.01); G01D 5/20 (2006.01); G02B 7/08 (2006.01); G02B 13/00 (2006.01); G02B 27/64 (2006.01);
U.S. Cl.
CPC ...
H04N 5/2254 (2013.01); G01D 5/2046 (2013.01); G02B 7/08 (2013.01); H04N 5/2252 (2013.01); H04N 5/2257 (2013.01); G02B 13/004 (2013.01); G02B 27/646 (2013.01);
Abstract
A displacement sensor includes a first frame; a second frame; a first coil including a first voltage formed at the first frame applied to the first coil; a second coil formed at the first frame including a current of a second voltage flowing in the second coil corresponding to a voltage of the first frame if the first voltage is applied to the first coil; a conductor coupled to the second frame; and a detector for calculating a relative position between the first frame and the second frame by monitoring the second voltage. Further, a size of the second voltage is reduced if the second coil is moved closer to the conductor.