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US 6,305,661 B1Granted
Mold for making rotationally asymmetric contact lenses
AssigneeBausch & Lomb Incorporated
InventorGabriel Philip Kennedy
Life of this patent
Estimating the term…
Abstract
A mold is disclosed for making rotationally asymmetric contact lenses. The mold comprises a first concave or convex surface that is rotationally asymmetric for forming the surface of the contact lens thereagainst, a second concave or convex surface opposed to the first surface that is also rotationally asymmetric, and a segment of the mold between the first and second surfaces having a substantially uniform thickness.
Claims14
A contact lens mold comprising:
- a first concave or convex surface that is rotationally asymmetric for forming a rotationally asymmetric surface of the contact lens thereagainst,
- a second convex or concave surface opposed to said first surface that is rotationally asymmetric,
- a segment of said mold between said first and second surfaces having a substantially uniform thickness.
A contact lens mold assembly comprising first and second contact lens mold sections, at least one of said first and second contact lens mold sections comprising:
- a first concave or convex surface that is rotationally asymmetric for forming a rotationally asymmetric surface of the contact lens thereagainst,
- a second convex or concave surface opposed to said first surface that is rotationally asymmetric,
- a segment of said mold between said first and second surfaces having a substantially uniform thickness.
Dependencies are inferred from the claim text.