Off-Axis LED Curved Array Lighting Design for Leather Defect Detection

Deyu Wang; Xuekun Wang; Wenwen Yu; Jianjun Cao; Weiying Qian; Shumei Gao

doi:10.3788/LOP56.082202

Laser & Optoelectronics Progress, Volume. 56, Issue 8, 082202(2019)

Off-Axis LED Curved Array Lighting Design for Leather Defect Detection

Deyu Wang, Xuekun Wang, Wenwen Yu, Jianjun Cao, Weiying Qian, and Shumei Gao^*

Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, College of Science, Jiangnan University, Wuxi, Jiangsu 214122, China

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Figures & Tables(8)

Fig. 1. Single LED lighting. (a) Coaxial illumination; (b) off-axis illumination

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Fig. 2. Curved LED array distribution and lighting diagram

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Fig. 3. Flow chart of LED array design optimization algorithm

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Fig. 4. Free-form surface LED array model. (a) Arrays; (b) lateral view

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Fig. 5. Target illumination distribution

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Fig. 6. Experimental device. (a) 3D structure of curved border; (b) illuminance measuring platform

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Fig. 7. Illumination distributionfor actual measurement

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Fig. 8. Defect recognition for each lighting mode

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Deyu Wang, Xuekun Wang, Wenwen Yu, Jianjun Cao, Weiying Qian, Shumei Gao. Off-Axis LED Curved Array Lighting Design for Leather Defect Detection[J]. Laser & Optoelectronics Progress, 2019, 56(8): 082202

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Paper Information

Category: Optical Design and Fabrication

Received: Oct. 10, 2018

Accepted: Nov. 16, 2018

Published Online: Jul. 26, 2019

The Author Email: Shumei Gao (gaosm@jiangnan.edu.cn)

DOI:10.3788/LOP56.082202

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology