Lenses capable of post-fabrication power modification

G - Physics – 02 – B

Patent

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Details

G02B 1/04 (2006.01) A61F 2/16 (2006.01) A61L 27/18 (2006.01) G02B 5/04 (2006.01) G02C 7/02 (2006.01) G02F 1/19 (2006.01)

Patent

CA 2360583

The present invention relates to lenses that are capable of post-fabrication power modifications. In general, the inventive lenses comprise (i) a first polymer matrix and (ii) a refraction modulating composition that is capable of stimulus-induced polymerization dispersed therein. When at least a portion of the lens is exposed to an appropriate stimulus, the refraction modulating composition forms a second polymer matrix. The amount and location of the second polymer matrix may modify a lens characteristic such as lens power by changing its refractive index and/or by altering its shape. The inventive lenses have a number of applications in the electronics and medical fields as data storage means and as medical lenses, particularly intraocular lenses, respectively.

La présente invention concerne des lentilles à puissance modifiable après fabrication. De façon générale, les lentilles de l'invention comprennent (i) une première matrice polymère, et (ii) une composition modulant la réfraction, capable d'induire une polymérisation par stimulus, et dispersée dans toute la lentille. Lorsqu'au moins une partie de la lentille est exposée à un stimulus adéquat, la composition modulant la réfraction produit une seconde matrice polymère. La quantité et l'emplacement de la seconde matrice polymère peuvent modifier une caractéristique de la lentille, telle que sa puissance, en modifiant son indice de réfraction et/ou sa forme. Les lentilles de l'invention présentent de nombreuses applications en électronique et en médecine, en tant que moyens de stockage de données et en tant que lentilles médicales, notamment en tant que lentilles intraoculaires.

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