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:
Jan. 21, 2025
Filed:
Mar. 31, 2021
Wuhan Jingce Electronic Group Co., Ltd, Hubei, CN;
Wuhan Jingli Electronic Technology Co., Ltd, Hubei, CN;
Changdong Ou, Wuhan, CN;
Zengqiang Zheng, Wuhan, CN;
Shiwen Luo, Wuhan, CN;
Zhikun Hong, Wuhan, CN;
Zhou Wang, Wuhan, CN;
Fan Zhong, Wuhan, CN;
Luning Liu, Hubei, CN;
Xiaofan Feng, Wuhan, CN;
Ronghua Liu, Hubei, CN;
Yafei Shen, Wuhan, CN;
Kai Chen, Wuhan, CN;
Wuhan Jingce Electronic Group Co., LTD, Wuhan, CN;
Wuhan Jingli Electronic Technology Co., LTD, Wuhan, CN;
Abstract
A chromaticity measurement method and device for calibration of a tiled LED display screen (A) having the advantages of convenience in operation and accurate measurement. The chromaticity measurement method includes: imaging emergent light from the tiled LED display screen (A) with an objective lens (); receiving a light beam from the objective lens () with a transflective lens () and performing beam splitting to obtain a first light beam and a second light beam; receiving the first light beam with an imaging sensor () to obtain an original image; receiving the second light beam in a two-dimensional lattice form with a movable optical fiber array coupling device (), and converting the second light beam into one-dimensional lattice light; and obtaining chromaticity information and spectrum information of a plurality of regions on the tiled LED display screen (A) according to the one-dimensional lattice light with a spectrum acquisition device (). The emergent light is split, analysis is performed with the imaging sensor (), chromaticity measurement and spectrum measurement are performed with a spectrometer (), and calibration and correction are performed on the imaging sensor () on the basis of measurement results of the spectrometer ().