| 摘要 |
A method of dyeing an optical article in which the article is immersed in a dyeing solution which is heated and subjected to ultrasonic energy. The article is immersed for a time span commensurate with the desired tint or hue after which the article is cleaned and dried. As a result, eyeglass lenses made of a plastic material, or mineral glass, can be produced at a reproducible quality of dye and color gradient.
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