Lenses with a variable refraction index
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United States of America Patent
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Oct 20, 1998
Grant Date -
N/A
app pub date -
Dec 3, 1993
filing date -
Feb 20, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lens having a variable index of refraction and a point of symmetry is fabricated from a plurality of substantially identically shaped parts. Each of the parts is pyramidal in configuration and has a base and a plurality of sides extending from the base to an apex. Each of the parts has a coefficient of refraction which varies from the base to the apex.
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