Annular mask lens having diffraction-reducing edges

Details Annular mask lens having diffraction-reducing edges Annular mask lens having diffraction-reducing edges

G - Physics

02

C

G02C 7/04 (2006.01) A61F 2/14 (2006.01) A61F 2/16 (2006.01)

Patent

CA 2257726

Annular mask lens for vision correction having diffraction-reducing edges. The lens body having an annular mask that forms a "soft edge" by gradually decreasing the transmissivity radially from the center aperture to the annular mask area.

La présente invention concerne une lentille de contact correctrice à masque annulaire et dont les bords réduisent le phénomène de diffraction. Le corps de la lentille comporte un masque annulaire qui, pour constituer un "bord doux", fait décroître graduellement la transmissivité, radialement de l'ouverture centrale vers la zone du masque annulaire.

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