Improvements in or Relating to the Manufacture of Variable Focus Fluid Lenses
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United States of America Patent
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Issued Date -
Jan 7, 2016
app pub date -
Feb 11, 2014
filing date -
Feb 18, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of manufacturing a variable focus fluid lens assembly which includes mounting a membrane assembly within a recess formed in a lens housing said assembly including a distensible transparent membrane supported round its periphery by a supporting member and a flexible tubular wall having first and second opposite ends one of said ends being joined to the supporting member to form a cavity within the wall that is closed at the one end by the membrane; filling the cavity with a transparent fluid and fitting a transparent cover plate to the housing across the other end of the wall. The other end being joined sealingly to the cover plate or to the housing thereby to seal the cavity to form a compressible fluid-filled envelope. The cover plate may include a fixed lens selected from a stock of lenses having the same shape for fitting to the lens assembly, but different other optical properties, such for example as different base curves and/or decentration distances.
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