Abstract
A method for a realtime detection of a dye has been proposed which enables us to measure a concentration and it's fluctuation of the three base colors. The method is based on a light attenuation theory and its principle requires three different lasers having the three base colors. A series of preliminary experiments have been conducted using a semi-conductor laser with a wavelength of 670 nm in order to confirm the feasibility of the method. The results show that the sensitivity of the system is found to be 0.1% in weight and that the present method is capable of the measurements if three base color lasers are used as discussed in the paper.
