Colored contact lens and method for manufacturing the same
AssigneeMI Gwang Contact Lens Co., Ltd.
InventorSsang-gi Kim
Life of this patent
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Abstract
Disclosed are a colored contact lens and a method for manufacturing thereof, which forms a lens body by supplying a lens material onto a lower mold, molding a lens body with an upper mold and forms a cut portion and an optical portion by cutting off an upper surface of the lens body, and then forms a lens cover by forming an iris-colored part through printing on the cut portion and then supplying the lens material again onto the lens body, thus enabling mass production of the colored contact lens which does not cause any discomfort.
Claims9
A method for manufacturing a colored contact lens, the method comprising the steps of:
- molding a lower lens body with a curved bottom surface adapted for contact with an eye and an upper surface opposite said bottom surface, using a lower mold and an upper mold with a first lens material;
- cutting off a portion of said lower lens body extending from all of said upper surface of the lower lens body, forming a centrally located optical portion disposed within an annular cut portion, the optical portion extending above an upper surface of said annular cut portion, said annular cut portion extending from said optical portion to a peripheral edge of said upper surface of the lower lens body;
- forming an iris-colored part having an iris shape on the annular cut portion;
- molding an upper lens body on the lower lens body over said optical portion and said cut portion using the lower and upper mold with a second lens material;
- and
- cutting and off an upper surface of the upper lens body.
A method for manufacturing a colored contact lens, the method comprising the steps of:
- forming a lens body by supplying a first lens material onto a lower mold and pressing the lens material with an upper mold, wherein said molds are made of a material selected from the group consisting of polycarbonate, polybutyleneterephthalate and a mixture thereof;
- forming an annular cut portion by cutting off an upper surface of the lens body, said annular cut portion extending from an optical portion to a peripheral edge of said upper surface of the lens body;
- forming an iris-colored part having an iris shape on the annular cut portion;
- and
- supplying and polymerizing a second lens material on a surface of the lens body.
Dependencies are inferred from the claim text.