Dyeing method of dyeing plastic lens and dyeing device
AssigneeNidek Co., Ltd.
InventorsMinoru Inuzuka, Naohide Isogai
Life of this patent
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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:
- making a hard coat layer on the lens from a hard coating liquid containing tetrafunctional silane on a solids content of 30 % or less by weight;
- placing the lens with the hard coat layer in a vacuum vapor deposition device;
- 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 to be dyed of the lens with the hard coat layer;
- and
- heating the base body in the vapor deposition device under almost vacuum to sublimate the dye, and depositing the sublimed dye on the lens with the hard cot layer.
Dependencies are inferred from the claim text.