IP Library Granted Patent US 10,996,492
Granted Patent B2
US 10,996,492 · App. 15/437,653 · Granted May 4, 2021

Colored contact lens based on amorphous images

Inventors: Robert Carey Tucker (Suwanee, GA); Laura Ashley Creech (Atlanta, GA)
Assignee: Alcon Inc.
G02C7/046B29D11/00134B29D11/00961B29K2105/0061B29K2995/002
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Quick Facts
Patent No.
US 10,996,492
App. No.
15/437,653
Granted
May 4, 2021
Kind
B2
Abstract

A method of manufacturing a colored contact lens including the steps of providing a transparent contact lens having a pupil section and an iris section, the iris section surrounding the pupil section and applying a colorant to the surface of the contact lens. The colorant is applied to the contact lens as an amorphous pattern and covers an effective amount of the iris section of the same. The amorphous pattern provides a lens capable of changing the apparent color of the iris of a person wearing the lens while imparting a very natural appearance.

Claims (15)

1. A method of manufacturing a colored contact lens comprising the steps of:

a) inking, with a color ink, at least one cliché having a transfigured amorphous simulated iris pattern to be printed on a contact lens to form an inked image in the at least one cliché;

b) transferring the inked image from the at least one cliché to at least one surface of at least one contact lens forming mold by means of at least one transfer pad,

(c) at least partially curing the inked image transferred on the at least one surface of at least one contact lens forming mold to form a colored film;

(d) dispensing a hydrogel lens-forming material into at least one lens-forming cavity of the at least one contact lens forming mold; and

(e) curing the hydrogel lens-forming material within the at least one lens-forming cavity to form the contact lens, whereby the colored film detaches from the at least one surface of at least one contact lens forming mold and becomes integral with a body of the contact lens,

wherein the transfigured amorphous simulated iris pattern is made by the method comprising the steps of:

opening or scanning an image file in a photo editing software application, said image file containing a base amorphous image having at least two colors, wherein the base amorphous image is totally unrelated to any eye structure;

distorting the base amorphous image with one or more filters to change a shape of contents of the base amorphous base image,

reducing the opacity of the distorted base amorphous image to create a translucent image;

modifying the size of the translucent image to create a sized image; and

cutting out a lens shape from the sized image to simulate iris shape, the lens shape being defined by a substantially circular outer diameter having a smaller substantially inner circle removed therefrom.

2. The method of claim 1 , further comprising the step of selectively modifying the base amorphous image's sharpness, contrast, brightness or combinations thereof.

3. The method of claim 1 , further comprising the step of converting the distorted base amorphous image into grayscale.

4. The method of claim 1 , further comprising the step of converting the distorted base amorphous image into at least three grayscale image files.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 22, 2021
From: TUCKER, ROBERT CAREY; CREECH, LAURA ASHLEY
To: NOVARTIS AG
Reel/Frame 055664/0098 →
CONFIRMATORY DEED OF ASSIGNMENT EFFECTIVE APRIL 8, 2019 Recorded Dec 10, 2019
From: NOVARTIS AG
To: ALCON INC.
Reel/Frame 051454/0788 →