An optical-adjustable illumination pattern with a surface-structured diffuser compensated by index-matching liquid

作者：Lee Xuan Hao; Wu Chi Shou; Lee Kuan Hung; Yang Tsung Hsun; Sun Ching Cherng^*

来源：Optics and Laser Technology, 2013, 49: 153-155.

DOI：10.1016/j.optlastec.2012.12.003

• Intelligent lighting
• LED
• Micro-lens array

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.

• 出版日期2013-7
• 单位中央民族大学