Design, manufacturing and measurement for advanced optics selected, peer reviewed papers from the 4th Asia Pacific Conference on Optics Manufacture (APCOM 2014), November 9-11, 2014, Guangzhou, China - Xin, Chen; Wingbun, Lee; Qiang, Liu; ChiFai, Cheung; Suet, To; Sujuan, Wang (Key engineering materials, 2016)