| 摘要 |
<p>The present invention relates to a method for fabricating an optical lens with refraction index modulation, characterized in that, starting from a transparent hydrophilic polymer lens of the hydrogel type, previously shaped, said lens is impregnated with a photopolymerizable composition including at least one monomer and one photoinitiator in solution in a lens swelling solvent, the impregnated lens is then subjected to an irradiation modulated spacially in intensity and/or irradiation time, causing a local selective polymerization of the monomer, and the excess of photoinitiator and non polymerized monomer is removed by extraction with a solvent.</p> |
