Method of manufacturing optical elements
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United States of America Patent
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Oct 13, 2015
Grant Date -
Jan 12, 2012
app pub date -
Mar 11, 2010
filing date -
Apr 7, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a method for manufacturing optical elements, the method including the following processes: a process to determine the wave-front aberration for a lens fabricated using a reference die, and then choose the integer multiple of a predetermined constant that is closest to the difference between a lens design value and the wave-front aberration for the lens fabricated using the reference die; and a process to determine the amount of aberration correction that cancels out the aforementioned integer multiple aberration, change the lens design so that either the low-order spherical aberration or the low-order astigmatism therefor becomes equal to the aberration correction, and fabricate a correction die from either a first or a second die, with the shape of the molding surface thereof changed on the basis of the changed design value. Then the die design value is decided upon, yielding a final die.
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