System and method for marking an ophthalmic lens
OwnerJoseph E. Sicari, William E. Meyersinventors
Life of this patent
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Abstract
A system and method for providing a discernable marking within a contact lens including forming a marking section substantially simultaneously with the formation of a bulk section of said lens. The marking section may be formed entirely during formation of the bulk section or may include preformed elements and may be extruded, inlaid, embedded, injected, or dyed within the bulk section. The bulk section may be formed as a rod, a sheet, or as an injection molded lens. The marking section extends substantially from the front to back surfaces of the lens.
Claims25
An opthalmic lens having a marking formed therein wherein said lens comprises:
- a bulk section;
- and
- a marking section visually distinct from said bulk section, said marking section extending substantially from a front surface of said lens to a rear surface of said lens.
A method of forming polymeric stock for use in producing an opthalmic lens having a discernable marking formed therein, the method comprising the steps of:
- extruding a bulk section of a polymeric stock, said polymeric stock comprising one of a rod and a sheet;
- and
- producing a marking section within said polymeric stock visually distinct from said bulk section and extending substantially the finished thickness of said lens.
A method of forming a discernable mark within a contact lens, said method comprising:
- injecting a first polymer composition into a lens mold;
- and
- forming a marking section within said lens, said second polymer composition exhibiting different visual characteristics from said first polymer composition in said lens.
Dependencies are inferred from the claim text.