荧光粉浓度和温度对激光混合荧光投影光源发光特性的影响  

Influence of phosphor concentration and operating temperature on hybrid light source characteristics

作　　者：张驰良 张大伟[1,2,3] 韩朝霞[1,2,3] ZHANG Chiliang;ZHANG Dawei;HAN Zhaoxia(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Engineering Research Center of Optical Instruments and Systems(MOE),University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Modern Optical System,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093 [2]上海理工大学光学仪器与系统工程研究中心,上海200093 [3]上海理工大学上海市现代光学系统重点实验室,上海200093

出　　处：《光学仪器》2022年第3期62-67,共6页Optical Instruments

摘　　要：光源是投影显示系统的核心组成部件。激光投影光源具有亮度高、寿命长和色域广等特点,但存在成本较高和散斑现象的问题。将激光结合激发荧光作为投影机光源,可以有效降低成本并解决散斑问题。通过将钇铝石榴石(YAG)荧光粉和激光单元结合制成混合光源,研究了不同荧光粉质量分数及工作温度对混合光源发光特性的影响。实验结果表明,光源的亮度和色度坐标值均随着荧光粉质量分数的增大而提高,而荧光粉的转化效率随着工作温度的升高而降低。研究结果验证了激光–荧光混合作为投影机用光源的可行性,不仅降低了整机的制造成本,解决了激光光源存在的散斑问题,而且降低了对光源光学元件加工的精度要求,提升了量产的制成能力。Light source is the core component of projector display system.Laser light source has the characteristics of high brightness and long life,but it has the problems of high cost and speckle phenomenon.Combining laser with excited fluorescence as projector light source can effectively solve the problems.In this paper,the YAG phosphor and laser unit are combined into a hybrid light source.The influence of phosphor concentration and operation temperature on the luminous characteristics of the hybrid light source was investigated.The experimental results show that the brightness and chromaticity of the hybrid light source increase with the increase of the phosphor concentration,and the conversion efficiency of phosphor decreases with the increase of working temperature.The research results verify the feasibility of the laser-fluorescence hybrid light source for the projector,which not only reduces the manufacturing cost of the whole machine and solves the speckle problem of the laser light source,but also reduces the precision requirements of the optical components and improves the success rate of mass production.

关 键 词：投影显示 激光光源 荧光 发光特性 

分 类 号：O482.31[理学—固体物理]