Design of Collimated LED Spot Location System
The collimated laser diode (LD) is often used as the benchmark in the optical measuring system. As it is difficult to overcome the drift in a long-term process, we design a collimated LED spot location system. The light from the LED is converged by the lens and coupled into the fiber, then comes out from the collimator. The spot image is captured by the CCD camera and the position of the spot is located by the centroid method. The test is taken between the system we designed and the tailor-made collimated LD light source location system in long-term. The result shows that the collimated LED spot location system we designed drifts much lower than LD system. It is more stable and can be used as the benchmark in the highprecision optical measurement.
measurement collimated LED light source laser diode (LD) light spot drift CCD camera
Lv Yong Feng Qibo Niu Yue Liu Lishuang Liu Pengfei
School of Science,Beijing Jiaotong University,Beijing 100044,China School of Photoelectronic Informa School of Science,Beijing Jiaotong University,Beijing 100044,China School of Photoelectronic Information & Communication Engineering,Beijing Information Science & Tech School of Photoelectronic Information & Communication Engineering,Beijing Information Science & Tech
国际会议
厦门
英文
1018-1021
2010-05-22（万方平台首次上网日期，不代表论文的发表时间）