TREA

Polishing of optical and non-optical tools for improved mold flow

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Information

  • Patent Application
  • 20070178809
  • Publication Number
    20070178809
  • Date Filed
    January 31, 2007
    17 years ago
  • Date Published
    August 02, 2007
    17 years ago
Information
Abstract
This invention is related to contact lenses. In particular, the present invention is related to methods for improving mold flow by polishing optical and non-optical tools used to create molds for contact lenses.
Description

BRIEF DESCRIPTION OF THE DRAWINGS


FIG. 1 is a graph showing the resultant cylinder for polished and unpolished tools.


Claims
  • 1. A method for creating an ophthalmic lens mold comprising Polishing a first side of an optical tool, wherein said first side of the optical tool creates the portion of a mold that contacts prepolymers; andPolishing a second side of an optical tool, wherein said second side of the optical tool does not create the portion of the mold that contacts prepolymers.
  • 2. The method of claim 1, wherein polishing said second side reduces cylindrical distortion in a resultant lens.
  • 3. The method of claim 1, wherein said polishing said second side reduces boundary layer effects.
  • 4. The method of claim 1, wherein said polishing is achieved by one or more of the following: using diamond compound paste and using a polishing pad.
  • 5. The method of claim 1, wherein said polishing is achieved by using magnetic resonance.
  • 6. A method of creating an ophthalmic lens mold comprising Milling rod material to create one or more rough optical toolsLathing said optical tools, wherein each optical tool has at least two sides;Polishing a first side of an optical tool, wherein said first side of the optical tool creates the portion of a mold that contacts prepolymers; andPolishing a second side of an optical tool, wherein said second side of the optical tool does not create the portion of the mold that contacts prepolymers.
  • 7. The method of claim 6, wherein polishing said second side reduces cylindrical distortion in a resultant lens.
  • 8. The method of claim 6, wherein said polishing said second side reduces boundary layer effects.
  • 9. The method of claim 6 wherein said polishing is achieved by one or more of the following: using diamond compound paste and using a polishing pad.
  • 10. The method of claim 6, wherein said polishing is achieved by using magnetic resonance.
Provisional Applications (1)
Number Date Country
60764101 Feb 2006 US