Patent ID: 6840621

Claim:
A dyeing system for a lens to be dyed, including; color measuring means for measuring a color of a colored lens to obtain color data of the colored lens; determination means for determining data for dyeing the lens to be dyed based on the obtained color data; a printer for applying dyes to a base substrate to be used for dyeing; and control means for controlling the printer to adjust application amounts of dyes onto the base substrate based on the determined dyeing data, wherein the color measuring means obtains data on spectral transmittance as the color data, and the determination means includes memory means which stores dyeing information needed for determining the dyeing data, the dyeing information including data on the kind of the dyes, data on distribution ratios of the dyes, and data on spectral transmittance corresponding to each distribution ratio, the determination means compares the obtained spectral transmittance data with the stored spectral transmittance data to determination the dyeing data.