Field testing method of color temperature of outdoor LED lamps

In the paper, to find the only filed color temperature testing method, three kinds of color temperature testing instrument, color luminance meter, color illuminance meter, and mobile spectrometer were introduced. By comparing their construction, color illuminance seems to be most available to measure the color temperature of outdoor LED lamps. Considering disturbing factors such as vehicle light, environment light, and clothing color during the measurement, corresponding resolutions were suggested.