The purpose of this research is to set up the dyeing process of the plastic lens and measure the UV transmittance of the tinted plastic lenses which include UV-absorbing and non-UV absorbing. In experiment, the spectrometer (USB 2000) is used to measure the UV transmittance in both cases. Furthermore, the characters of the UV transmittance in different deep and light colors of the UV-absorbing tinted plastic lenses are compared. The results of the experiment in the UV-absorbing tinted plastic lenses are: the effect of the UV-absorbing tinted plastic lens better than that of non-UV absorbing tinted plastic lens. Among the deep color series, in the effects of UV-absorbing tinted plastic lens are: the deep green color is better than the deep red and blue colors. However, among the light color series, in the effects of UV-absorbing tinted plastic lens are: the light red color is better than light green and blue colors. According to the results, the consumers can have more choices in the UV-absorbing tinted plastic lenses.
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