Abstract
Complaints of HIGH-Ra LED lighting based on dimming control are steadily occurred by the quality degradation due to the luminance deviation. Consequently, constructors and electrical contractors currently avoid the sales and distribution of this lighting.BR This problem was appeared because the characteristics of each electronic device such as wavelength band, linearity, gain characteristic, off-set and cut-off of the HIGH-Ra LED lighting that CRI value is improved by phosphor or mixed LED light sources are not considered. It can be sufficiently improved by an inspection method in a whole range of dimming level. However, the present inspection methods are only conducted by lighting test, actinography or aging test.BR Therefore, the paper proposes the dynamic calibration method, considering the functions of dynamic check equipment and interlocking․calibration based on dimming level, for the production quality of the HIGH-Ra LED lighting in order to overcome the disadvantages of the present inspection. This method offers the sequential areal inspection and narrow range auto calibration, to detect the defective parts and analyze the corresponding causes. At the same time, it can improve not only production quality and productivity, but also reduce the inspection time and production costs.
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