Wuhan Jingce Electronic Group Co., Ltd.

Wuhan Jingli Electronic Technology Co., Ltd

Changdong Ou

Zhou Wang

Bo Li

Yafei Shen

Biaohua Deng

Linhai Mei

Wenzhong Dong

Wentian Tang

Zengqiang Zheng

Xiaofan Feng

Ronghua Liu

Kai Chen

Luning Liu

Moxiao Xu

Shiwen Luo

Fan Zhong

Zhikun Hong

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

An automatic optical inspection device, including an image storage unit; an image computing unit; and an image acquisition unit. The image storage unit includes a first communication interface and a second communication interface. The image computing unit includes a first optical interface, a second optical interface, a third optical interface, and a fourth optical interface; the image acquisition unit includes a third communication interface and a camera interface. The image storage unit is configured to transmit configuration parameters and test commands to the image computing unit, receive a test result transmitted from the image computing unit via the first communication interface, and receive data from the image acquisition unit via the second communication interface. The image computing unit is configured to receive the configuration parameters and test commands from the image storage unit, and transmit the test result to the image storage unit via the first fiber interface.

Automatic optical inspection device based on CPU+GPU+FPGA architecture

An image acceleration processing device including a field programmable gate array (FPGA) processing platform; and a personal computer (PC). The FPGA processing platform includes: a first fiber interface configured to receive configuration parameters and test commands, and to output test results; a second fiber interface configured to exchange data with the PC; a third fiber interface configured to receive image data and output the configuration parameters and the test commands; a fourth fiber interface configured to control the generation of a screen lighting signal; and a fifth fiber interface configured to control an input/output (IO) light source.

Image acceleration processing device for automatic optical inspection of LCD module

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Wuhan, China

Changdong Ou