半导体激光白光照明关键技术研究

发布时间：2018-01-28 01:40

本文关键词： 半导体激光器荧光粉白光光源　出处：《长春理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：白光照明在人类生活和生产活动中扮演着十分重要的角色,基于半导体激光白光照明的光源具有体积小、耗能低、光色稳定以及工作寿命长等优点,是很有发展前景的新一代固态照明光源,对其开展研究具有很重要的意义。本文针对半导体激光白光光源,采用蓝光激光激发黄色荧光粉合成白光的方法,开展了系统的研究。采用的激发光源为447nm的激光二极管,荧光粉为YAG黄色荧光粉,为了提高光源的显色性,本文还采用了一种红色荧光粉。1.研究了荧光粉片浓度与厚度对白光光源色度学特性的影响,得到最佳样品的色温为4637K,显色指数为71.6。2.研究了荧光粉片的形状对白光光源色温均匀性的影响,结果表明平凸透镜型荧光粉片的光源色温均匀性最佳,圆屋顶型荧光粉片的光源色温均匀性次之,圆片型荧光粉片的光源色温均匀性最差。3.研究了黄色荧光粉中添加红色荧光粉对光源显色指数的影响,发现通过添加红色荧光粉,光源的显色指数得到了明显的提高,最高为83.4。4.研究分析了不同驱动电流对光源色度学特性的影响,结果表明,在不同驱动电流下,光源的色坐标、色温及显色指数变化的幅度很小,其色坐标差?yx???)005.0,005.0(,,光源很稳定。5.利用Tracepro光学仿真软件模拟设计了半导体激光白光光源的适用性封装,得到了发光角度为20o的半导体激光白光光源。
[Abstract]:White light lighting plays a very important role in human life and production activities. The light source based on semiconductor laser white light lighting has the advantages of small volume, low energy consumption, stable light color and long working life. It is of great significance to study the new generation of solid-state illumination light source. In this paper, the blue laser is used to stimulate the yellow phosphor to synthesize white light. The excitation light source is 447nm laser diode, the phosphor is YAG yellow phosphor, in order to improve the color rendering of the light source. The influence of the concentration and thickness of phosphor on the chrominance characteristics of white light source was studied. The optimum color temperature of the sample was 4637 K. The color rendering index is 71.6.2.The effect of the shape of phosphor on the color uniformity of white light source is studied. The results show that the light source color temperature uniformity of flat convex lens phosphor is the best. The color temperature uniformity of the light source of the dome type phosphor is the second, and the color temperature uniformity of the circular phosphor is the worst. 3. The effect of the addition of red phosphor to the yellow phosphor on the color rendering index of the light source is studied. It is found that by adding red phosphors, the color rendering index of the light source is obviously increased, the maximum is 83.4.4.The effect of different driving current on the chrominance characteristics of the light source is studied and analyzed, the results show that. Under different driving currents, the color coordinate, color temperature and color rendering index of the light source vary very little, but the color coordinate is different. Yx? ? ? The light source is very stable .5.Using Tracepro optical simulation software, the suitability package of semiconductor laser white light source is designed. A semiconductor laser white light source with a luminescence angle of 20 o was obtained.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM923.3;TN249

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