Patent ID: 6656231
Filing Date: 2003-12-02
Classification: D06P

Abstract:
A dyeing method of dyeing a plastic lens, including:a step of placing the lens in a vacuum vapor-deposition device; a step of placing a base body to be used for a dyeing operation in the vapor-deposition device, the base body being applied with a dyeing solution containing a dissolved or fine-grained dispersed sublimatable dye to form a dye application area on the base body, and the base body being arranged so that the dye application area faces the lens without contact therewith; a step of heating the base body under vacuum in the vapor-deposition device, thereby sublimating the dye of the dye application area to vapor-deposit the sublimated dye on the lens; and a step of heating the lens on which the dye has been vapor-deposited at changing heating temperatures, thereby fixing the dye on the lens.