Achromatic gradient index singlet lens
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United States of America Patent
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Feb 25, 2014
Grant Date -
Jan 3, 2013
app pub date -
Jun 11, 2012
filing date -
Jun 29, 2011
priority date (Note) -
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Abstract
A method of making an achromatic gradient index singlet lens comprising utilizing a gradient index material with a curved front surface in which light does not follow a straight line as it travels through the material and wherein different color rays traverse different curved paths, utilizing the natural dispersion of the curved front surface as a strong positive lens, and developing a weakly diverging GRIN distribution within the lens to balance the chromatic aberrations of the curved front surface.
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