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
- Laser & Optoelectronics Progress
- Vol. 56, Issue 8, 082202 (2019)
Fig. 1. Single LED lighting. (a) Coaxial illumination; (b) off-axis illumination
Fig. 2. Curved LED array distribution and lighting diagram
Fig. 3. Flow chart of LED array design optimization algorithm
Fig. 4. Free-form surface LED array model. (a) Arrays; (b) lateral view
Fig. 5. Target illumination distribution
Fig. 6. Experimental device. (a) 3D structure of curved border; (b) illuminance measuring platform
Fig. 7. Illumination distributionfor actual measurement
Fig. 8. Defect recognition for each lighting mode
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