Secondary optical design of LED lamps with high CRI and adjustable CCT

摘要：

　　A novel secondary optical design for LED lamps with high color rendering indices(CRI)and adjustable correlated color temperature(CCT)is proposed.RGB LED cells are assembled in a three dimensional manner together with a set of beam mixers.Perfect light mixing is resulted by optimizing the structural parameters of the reflectors and beam mixers.A supplement amber LED is used for light compensation.Illuminance and color of the luminaire can both be adjusted.CRI larger than 90 is maintained for a very wide temperature range from 4000K to 6500K.The largest Ra valued up to 93 is obtained at 6276K.Except for its outstanding optical characteristics,the present design is also featured by its advantages in simplifying the heat dissipation design.More LED cells could then be included in a lamp of relative small volume to get higher power.

关键词： LED secondary optical design CRI CCT

作者: Keming Zeng Yujie Li Jin Chang Chunjin Hang Chunqing Wang

作者单位: State Key Laboratory of Advanced Welding & Joining School of Materials Science and Engineering,Harbi State Key Laboratory of Advanced Welding & Joining School of Materials Science and Engineering,Harbi

会议类型: 国际会议

会议名称: The 15th International Conference on Electronic Packaging Technology (ICEPT 2014) ) (第十五届电子封装技术国际会议)

会议地点: 成都

会议语种:英文

页码: 1472-1476

在线出版日期: 2014-08-12（万方平台首次上网日期，不代表论文的发表时间）