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INVISION BIOMEDICAL'S  OPHTHALMIC LENS DESIGN  & PROTOTYPING FACILITY CRYOGENIC LATHING AND MILLING TECHNOLOGY FOR INTRAOCULAR/CONTACT LENSES
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Step 2: The blanks are first seated on specially designed icing mandrels.  The icing technology involves freezing a thin layer of water between the blank and mandrel.  In a matter of seconds the blank is rigidly clamped onto the mandrel.
Step 3: On our ultra-precision CNC optical lathe, the mandrel  is maintained at subzero temperatures. The polymer blank is diamond cut to provide the curved first surface of the lens.
Step 4: The haptic shape and optic diameter are then outlined by a precision CNC Mini-mill. As with the lathing process, this is done at  sub-zero temperatures.
Step 5: Finally, the blank is flipped and transferred to another mandrel and goes back to the lathe for the second optical surface to be cut.  What's left is an intraocular lens ready to be polished, inspected, and packaged. This is a wax-free process - clean-up prior to tumbling is minimal.
18226 McDurmott West, Suite F, Irvine, CA 92614 Ph: (949) 872-2126  Fx: (949) 872-2754 email:   www.invisionbiomedical.com

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Ophthalmic Lens Design Prototype Facility – InVision Biomedical

  • 1. INVISION BIOMEDICAL'S OPHTHALMIC LENS DESIGN & PROTOTYPING FACILITY CRYOGENIC LATHING AND MILLING TECHNOLOGY FOR INTRAOCULAR/CONTACT LENSES
  • 2.
  • 3. Step 2: The blanks are first seated on specially designed icing mandrels. The icing technology involves freezing a thin layer of water between the blank and mandrel. In a matter of seconds the blank is rigidly clamped onto the mandrel.
  • 4. Step 3: On our ultra-precision CNC optical lathe, the mandrel is maintained at subzero temperatures. The polymer blank is diamond cut to provide the curved first surface of the lens.
  • 5. Step 4: The haptic shape and optic diameter are then outlined by a precision CNC Mini-mill. As with the lathing process, this is done at sub-zero temperatures.
  • 6. Step 5: Finally, the blank is flipped and transferred to another mandrel and goes back to the lathe for the second optical surface to be cut. What's left is an intraocular lens ready to be polished, inspected, and packaged. This is a wax-free process - clean-up prior to tumbling is minimal.
  • 7. 18226 McDurmott West, Suite F, Irvine, CA 92614 Ph: (949) 872-2126 Fx: (949) 872-2754 email: www.invisionbiomedical.com