Studies on primary lens for LED light source to enhance lateral emission intensity

2019 16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS) Pub Date : 2019-11-01 DOI:10.1109/sslchinaifws49075.2019.9019771

Wenting Tang, Baojin Chen, Rui Zhang, Baoxing Wang, Yunfei Sun, J. Min, Shuqi Li, Yong Cai

{"title":"Studies on primary lens for LED light source to enhance lateral emission intensity","authors":"Wenting Tang, Baojin Chen, Rui Zhang, Baoxing Wang, Yunfei Sun, J. Min, Shuqi Li, Yong Cai","doi":"10.1109/sslchinaifws49075.2019.9019771","DOIUrl":null,"url":null,"abstract":"Typical LED light sources have lower light utilization efficiency (LUE) in reflective directional illumination applications due to light pattern mismatch. Light patterns are generally controlled by secondary optical systems, which are heavy and large. Compared with the secondary optical system, the primary lens is smaller in size, lighter in weight, and more efficient in light extraction. This work is a preliminary study on the primary lens of LED in order to improve the LUE of LED in reflective directional illumination fields. Experimental result shows that the light extraction efficiency (LEE) of LED light source packaged by a primary optical lens is improved by a maximum proportion of 16.3%. The LUE of the LED packaged with the primary lens is up to 40.1% at 60°. After encapsulating the primary lens, the weighted mean angle of light intensity in the full space is at 57° which is bigger than that of LED without primary lens (46°).","PeriodicalId":315846,"journal":{"name":"2019 16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/sslchinaifws49075.2019.9019771","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Typical LED light sources have lower light utilization efficiency (LUE) in reflective directional illumination applications due to light pattern mismatch. Light patterns are generally controlled by secondary optical systems, which are heavy and large. Compared with the secondary optical system, the primary lens is smaller in size, lighter in weight, and more efficient in light extraction. This work is a preliminary study on the primary lens of LED in order to improve the LUE of LED in reflective directional illumination fields. Experimental result shows that the light extraction efficiency (LEE) of LED light source packaged by a primary optical lens is improved by a maximum proportion of 16.3%. The LUE of the LED packaged with the primary lens is up to 40.1% at 60°. After encapsulating the primary lens, the weighted mean angle of light intensity in the full space is at 57° which is bigger than that of LED without primary lens (46°).

查看原文本刊更多论文

提高LED光源侧向发射强度的主透镜研究

典型的LED光源在反射定向照明应用中，由于光模式不匹配，导致光利用效率(LUE)较低。光模式一般由二次光学系统控制，这是沉重和大。与二次光学系统相比，主透镜体积更小，重量更轻，光提取效率更高。为了提高LED在反射定向照明领域的LUE，本文对LED主透镜进行了初步的研究。实验结果表明，采用一次光学透镜封装的LED光源的光提取效率(LEE)最大提高了16.3%。主透镜封装的LED在60°时的LUE高达40.1%。封装主透镜后，全空间的加权平均光强角为57°，大于未封装主透镜时的46°。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2019 16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS)

自引率

0.00%

发文量