Chen, Y.-D.Y.-D.ChenChen, Y.-H.Y.-H.ChenHsu, W.-Y.W.-Y.HsuGUO-DUNG JOHN SU2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-70449556445&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/350026[SDGs]SDG11Free-form lens for laser level systemconference paper10.1117/12.826784