Precision micro-optical elements and the method of making precision micro-optical elements
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United States of America Patent
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Oct 19, 2004
Grant Date -
N/A
app pub date -
Feb 27, 2001
filing date -
Feb 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Micro-optical elements such as lenses and wave-guides are manufactured by printing a hardenable optical fluid using digitally driven ink-jet technology. An array of micro-optical elements are precisely positioned in an electroformed substrate having a surface containing structural openings which serve as molds for micro-droplets of optical fluids deposited from an ink-jet printhead. The structural openings have a stepped down edge, a shelf-like support surface below the edge and a centered aperture in the substrate. The micro-optical element formed is controlled by the shape of the edge in the surface of the substrate and the radius by the volume of micro-droplets deposited into the structural opening. The structural openings can be circular, or any desired shape which is easily and precisely formed in an electroformed substrate.
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