Measuring refractive index of optical glass basedon photo-electric technology
-
摘要: 折射率是玻璃的重要光学性能之一，其测量方法很多。为了准确、快速、适应性好地测量玻璃折射率，提出一种基于光电技术的新测量方法。利用平行平板玻璃对入射光线的侧向偏移特性，可以得到不同折射率的玻璃对光线的不同偏折程度来确定折射率和偏移量之间的关系式，并通过采用位置敏感探测器将光斑像点的位移转化为电信号的输出，从而实现折射率转化为电信号。设计了光学系统和信号处理单元，通过实验测得了K9玻璃的折射率，并与最小偏向角法测量折射率进行对比，测量数据表明该方法可行，测量精度可达到10-4 ，可以满足测量高精度玻璃折射率的要求。Abstract: Refractive index is an important parameter for optical glass and there are many methods to measure the refractive index of optical glass. In order to measure refractive index accurately and quickly, a new method is introduced to measure refractive index of optical glass based on photo-electric technology. Optical flat has the feature of deviating incident ray, we can get the function of the offset distance and the refractive index, and the displacement fluctuation of light spot image is converted to electric signal outputting by a position sensitive detector. We designed an optical system and a signal detecting and processing circuit, measured the refractive index of K9 glass, and compared the results with the data measured by the method of minimum angle of deviation. The result proves this method is feasible, the accuracy of refractive index reaches 10-4, and it can be used to measure the refractive index of glass with high accuracy demand.
-
-
［1］孟庆华,向阳.高精度测量玻璃折射率的新方法［J］.光学精密工程,2008，16(11):2114-2118.
MENG Qing-hua, Xiang-yang. Novel high accurate measurement method for refractive index of optical glass［J］. Optics and Precision Engineering, 2008,16(11):2114-2118.(in Chinese with an English abstract)
［2］花世群.基于等厚干涉原理的液体折射率测量方法［J］.中国激光，2006,33(11):1542-1545.
HUA Shi-qun. Measurement of refractive index of liquid by the equal thickness inter-ference［J］. Chinese J.Lasers, 2006,33(11):1542-1545. (in Chinese with an English abstract)
［3］李湘宁. 工程光学［M］.北京：科学出版社，2005.
LI Xiang-ning. Engineering Optics［M］.Beijing: Science Press, 2005.(in Chinese)
［4］段洁,孙向阳.PSD在激光位移检测系统中的应用研究［J］.红外与激光工程,2007，36(6):281-284.
DUAN Jie, SUN Xiang-yang.Applications research to PSD in the laser displacement detecting system［J］. Infrared and Laser Engineering, 2007,36(6):281-284.(in Chinese with an English abstract)
［5］钟平.一种基于PSD红外线位置传感器的设计［J］.传感器技术,2005,24(5):53-54.
ZHONG Ping.Design of infrared position sensor based on PSD［J］. Journal of Transducer Technology, 2005,24(5):53-54. (in Chinese with an English abstract)
［6］于光平.基于PSD的一维位移测量系统［J］.仪表技术与传感器,2008（12）:2-3.
YU Guang-ping. One-dimension displacement measure system based on PSD［J］.Instrument Technique and Sensor, 2008(12):2-3. (in Chinese with an English abstract)
［7］李佳.基于PSD的光电自准直仪测量空间两平板相对倾角变形［J］.电子测量技术,2007,30(8):54-55.
LI Jia. Small relative angle deformation of two spatial plates measured byphotoelectric autocoll imator based on PSD［J］. Electronic Measurement Technology, 2007,30(8):54-55. (in Chinese with an English abstract)
［8］唐叔进.基于PSD的固体线膨胀系数测量仪［J］. 仪表技术与传感器,2008(1):32-33.
TANG Shu-jin. Measuring in strument for solid linear expansion coefficient -based on PSD［J］. Instrument Technique and Sensor, 2008（1）:32-33. (in Chinese with an English abstract)
计量
- 文章访问数: 3085
- HTML全文浏览量: 107
- PDF下载量: 878
下载:
陕公网安备 61011302001501号 