@article{36ea37ba6e174b5d99e5d8dc9187be82,
title = "An optical-adjustable illumination pattern with a surface-structured diffuser compensated by index-matching liquid",
abstract = "This paper presents a new luminaire for light-emitting diode (LED) lighting with an adjustable light pattern. The luminaire contains secondary optics and a surface-structured diffuser to spread the light pattern to fit a specified illumination area. The structured surface with a micro-lens array can be filled with index-matching liquid so that the lighting pattern is adjustable. A detailed simulation is presented for both optical efficiency and variation of the light pattern with variation of the refractive index of used liquid, and a corresponding experiment is demonstrated.",
keywords = "Intelligent lighting, LED, Micro-lens array",
author = "Lee, {Xuan Hao} and Wu, {Chi Shou} and Lee, {Kuan Hung} and Yang, {Tsung Hsun} and Sun, {Ching Cherng}",
note = "Funding Information: This study was supported in part by the National Central University{\textquoteright}s Plan to Develop First-class Universities and Top-level Research Centers , Grants 995939 and 100G-903-2 , and was also sponsored by the National Science Council of the Republic of China under Contracts 99–2623-E-008-002-ET and NSC100-3113-E-008-001 .",
year = "2013",
doi = "10.1016/j.optlastec.2012.12.003",
language = "???core.languages.en_GB???",
volume = "49",
pages = "153--155",
journal = "Optics and Laser Technology",
issn = "0030-3992",
}