Process for preparing soft tinted lenses
AssigneeHydron Limited
InventorWade Marcel Tipton
Life of this patent
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Abstract
A process for preparing a soft, tinted lens is described. The process comprises the steps of softening and tinting a xerogel lens 1, wherein the softening and the tinting are achieved by immersing the xerogel lens 1 in a single solution 5 capable of softening and tinting the xerogel lens 1.
Claims10
A process for preparing a soft, tinted lens, the process comprising the steps of softening and tinting a xerogel lens, wherein the softening and the tinting are achieved by immersing the xerogel lens in a single solution capable of softening and tinting the xerogel lens, wherein said single solution is also a fixing solution and wherein said fixing solution comprises sodium carbonate, and wherein said single solution comprises a dye.
A process for preparing a soft, tinted lens, the process comprising the steps of softening and tinting a xerogel lens, wherein the softening and the tinting are achieved by immersing the xerogel lens in a single solution capable of softening and tinting the xerogel lens, wherein said single solution is also a fixing solution and wherein said fixing solution comprises sodium carbonate.
A process for preparing a soft, tinted lens, comprising the step of immersing a xerogel lens in a solution comprising sodium carbonate and a dye, said solution having a pH greater than or equal to 8, for a sufficient time to produce a softened and tinted lens.
Dependencies are inferred from the claim text.