SPIE Proceedings [SPIE 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012) - Xiamen, China (Thursday 26 April 2012)] 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy - The optical properties of different temperature deposited ZnS film in visible to near-infrared region