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Automatic real-time focus control system for laser processing using dynamic focusing optical system Cao, Binh Xuan; Phuong Hoang Le; Ahn, Sanghoon; Kang, Heeshin; Kim, Jengo; Noh, Jiwhan, OPTICS EXPRESS, v.25, no.23, pp.28427 - 28441, 2017-11 |
High-Speed Focus Inspection System Using a Position-Sensitive Detector Cao, Binh Xuan; Le Hoang, Phuong; Ahn, Sanghoon; Kang, Heeshin; Kim, Jengo; Noh, Jiwhan, SENSORS, v.17, no.12, 2017-12 |
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