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	1.	High-Speed Focus Inspection System Using a Position-Sensitive Detector. [electronic resource] by Cao, Binh Xuan Hoang, Phuong Le Ahn, Sanghoon Kang, Heeshin Kim, Jengo Noh, Jiwhan Producer: 20180222 In: Sensors (Basel, Switzerland) vol. 17 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	In-Situ Real-Time Focus Detection during Laser Processing Using Double-Hole Masks and Advanced Image Sensor Software. [electronic resource] by Cao, Binh Xuan Hoang, Phuong Le Ahn, Sanghoon Kim, Jeng-O Kang, Heeshin Noh, Jiwhan Producer: 20180223 In: Sensors (Basel, Switzerland) vol. 17 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	High-speed, high-precision focal length measurement using double-hole mask and advanced image sensor software. [electronic resource] by Cao, Binh Xuan Le Hoang, Phuong Ahn, Sanghoon Kim, Jeng-O Kang, Heeshin Noh, Jiwhan Producer: 20180330 In: ISA transactions vol. 74 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Design and Performance of a Focus-Detection System for Use in Laser Micromachining. [electronic resource] by Cao, Binh Xuan Bae, Munju Sohn, Hyonkee Choi, Jiyeon Kim, Youngduk Kim, Jeng-O Noh, Jiwhan Publication details: Micromachines Jan 2016 In: Micromachines vol. 7 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)