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. 30, 2021
Filed:
Jan. 10, 2020
Lg Electronics Inc., Seoul, KR;
Jae Yoon Oh, Seoul, KR;
LG ELECTRONICS INC., Seoul, KR;
Abstract
Disclosed herein is an illumination state monitoring apparatus, the illumination state monitoring apparatus, including a dual band pass filter having a first pass band in the visible wavelength area and having a second pass band in the infrared wavelength area, an optical sensor detecting light having passed through the dual band pass filter through a three primary color pixel and an infrared pixel, and a processor deducting an intensity value of a signal detected by the infrared pixel from an intensity value of a signal detected by the three primary color pixel, calculating an illuminance parameter, and determining an illumination state on the basis of the illuminance parameter, wherein sensitivity of the three primary color pixel toward light having passed through the second pass band and sensitivity of the infrared pixel toward light having passed through the second pass band are within a predetermined range.