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Fluid lens

  • US 4,709,996 A
  • Filed: 08/10/1984
  • Issued: 12/01/1987
  • Est. Priority Date: 09/30/1982
  • Status: Expired due to Fees
First Claim
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1. A device for forming a fluid lens when immersed in a liquid medium, comprising:

  • a semipermeable transparent sheath defining a fully enclosed cavity and having a plurality of pores for permitting a liquid medium to flow into said cavity;

    a hydrophilic polymer array disposed in said cavity and presenting a pressure differential across said sheath when said sheath is immersed in the liquid medium for causing liquid medium to flow into said cavity and to hydrate said array, causing said array to expand and to completely fill said cavity, thereby causing said sheath to expand and to assume a defined lenticular shape, wherein said hydrated array assumes a shape having an outer contour defined by said expanded sheath and constitutes a fluid lens.

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