REFLECTIVITY MEASURING DEVICE FOR COLOR INFORMATION WITH LED AND PHOTOTRANSISTOR

摘要

PURPOSE: A reflective color information measuring device using an LED and a phototransistor and a measuring method using the same are provided to measure color on a real time basis and to have no influence of an ambient environment by testing in a dark room. CONSTITUTION: A reflective color information measuring device using an LED and a phototransistor includes light emitting devices (1-1, 1-2, 1-3), light receiving devices (2-1, 2-2), an A/D converter (10), and a conversion/analysis unit. The light emitting devices emits R/G/G lights of high luminance for measuring optical reflectance. The light receiving devices receives the R/G/B light emitted by the light emitting devices and reflected by a target object. The A/D convertor digitalizes light receiving signals transmitted by the light receiving devices. The conversion/analysis unit outputs the converted signals and converts the same into a predetermined value, thereby analyzing.