Wuhan Jingce Electronic Group Co., Ltd.

Wuhan Jingli Electronic Technology Co., Ltd

Fan Zhong

Yafei Shen

Zhou Wang

Zengqiang Zheng

Changdong Ou

Kai Chen

Xiaofan Feng

Ronghua Liu

Zhikun Hong

Luning Liu

Shiwen Luo

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 ().

Chromaticity measurement method and device for calibration of tiled LED display screen

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Wuhan, China

Fan Zhong