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US 12,007,628 B2Granted
Lens with color enhancement
AssigneeEssilor International
InventorsElliot French, Srinivasan Balasubramanian
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Abstract
Embodiments of the disclosure relate to the use of dyes that impart localized regions of reduced transmittance across specific wavelength ranges. The inclusion of transmittance-attenuating dyes into a lens provides enhanced color contrast by tuning the spectrum of visible light transmission through the lens.
Claims3
An ophthalmic lens comprising:
- a polymerized lens comprising at least one polymer;
- and
- a lens component configured to impart reduced light transmittance over a plurality of wavelength regions, comprising:
- a first light transmittance-reducing dye configured to impart a first region of reduced light transmittance having a center located between about 485 nanometers and 510 nanometers;
- a second light transmittance-reducing dye configured to impart a second region of reduced light transmittance having a center located between about 570 nanometers and 600 nanometers;
- wherein reduced light transmittance is a reduction in % transmittance of at least 50% as compared to a region outside a reduced light transmittance region and between 400 nanometers and 680 nanometers;
- wherein the ophthalmic lens optionally comprises a polarizing wafer construct;
- wherein the lens component configured to impart reduced light transmittance is a multilayer interferential film stack;
- and
- wherein the multilayer interferential film stack is a film laminate residing on a convex side of the ophthalmic lens.
7 more elements
Dependencies are inferred from the claim text.