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US 7,014,664 B2Granted
Dyeing method of dyeing plastic lens and dyeing device
AssigneeNidek Co., Ltd.
InventorMinoru Inuzuka
Life of this patent
Estimating the term…
Abstract
A dyeing method of a plastic lens (10), including the steps of placing the lens (10) in a vacuum vapor deposition device (20); placing a base body (1) for dyeing in the vapor deposition device (20), the base body having a dye application area (2) in which a sublimatable dye is applied, so that the dye application area (2) faces a surface of the lens to be dyed; and heating the base body (1) in the vapor deposition device (20) under almost a vacuum, while restraining a rise in temperature of the lens (10), to sublimate the dye, depositing the sublimed dye on the lens.
Claims5
A dyeing method of a plastic lens, including the steps of:
- placing the lens in a vacuum vapor deposition device;
- cooling the vacuum vapor deposition device, before or after the lens is placed therein, to restrain a temperature of the lens placed in the vapor deposition device from rising above a predetermined temperature before a dyeing operation;
- placing a base body for dyeing in the vapor deposition device, the base body having a dye application area in which a sublimatable dye is applied, so that the dye application area faces a surface of the lens to be dyed;
- heating the base body in the vapor deposition device under almost a vacuum to sublimate the dye, and depositing the sublimed dye on the lens;
- and
- heating the lens on which the dye has been deposited under atmospheric pressure to fix the deposited dye on the lens.
3 more elements
Dependencies are inferred from the claim text.