Unlike conventional lenses, the lens effect is not achieved by exactly grinding the glass surface but by changing the Refraction index of the lens material by integrating foreign atoms e.g. silver ions.
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AISTech (Pittsburgh, PA, US) Halle C / Stand 1345
05/16/16 - 05/18/16
ITEC (Akron, OH, US) John S. Knight Center / Stand 213
09/13/16 - 09/15/16