| Summary: | 碩士 === 國立臺北科技大學 === 光電工程系研究所 === 101 === Light emitting diodes (LEDs) will become the mainstream of lighting of next generation. With LED efficacy and color rendering index is gradually enhanced, in order to follow the rapid development of LED technology, the standards of LED lighting products need to be promoted actively. Standard is the conditions precedent for market development, and measurement technology is the important key of fairly assessing LED performance. The standard and perfect measurement technology needs to be established, and the credible and accurate data is obtained, and reference and comparison of Product development is provided for domestic manufacturers. The research purpose of this thesis designs and plans a set of 「Portable LED Measurement System」, and the required spectral information is obtained with integrating sphere、spectroradiometer, and other equipment. The test LED source information is calculated with calculation procedures and methods that CIE technical documents published. In addition, portable feature increases convenience and mobility of measurement, also LED characteristics can be measured anywhere. In this thesis, computing programs and HMI are written using MATLAB, and the results is compared with the results of measurement system that Company develops, and accuracy and reliability that optical measurement software is designed are verified. Relative errors of comparative results are almost about 1% or lower, but there are still errors about 10% or even 40%. However, measurement results of software of design correspond with the facts by verifying, so errors are generally within reasonable ranges. Taiwan is one of major productive countries of LED, so researching how to measure LEDs effectively and accurately is important issues of improving LED measurement errors. Therefore, the development of LED measurement technology will become a science that can’t be ignored.
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