# US 12,007,628 B2 · Lens with color enhancement

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- Number: US 12,007,628 B2
- Document ID: US12007628B2
- Status: Granted
- Kind: B2
- Application number: 16/973,580
- Filed: 2019-06-11
- Published: 2021-08-12
- Granted: 2024-06-11
- Earliest claimed: 2018-06-12
- Assignees: Essilor International
- Applicants: Essilor International
- Inventors: Elliot French; Srinivasan Balasubramanian
- Web page: https://patentgrep.com/patent/US12007628B2

## CPC

- G02C 7/107: {Interference colour filters}
- B29D 11/00432: {Auxiliary operations, e.g. machines for filling the moulds (B29D11/00125 takes precedence)}
- B29D 11/00644: {polarizing}
- B29D 11/0073: {Optical laminates}
- B29D 11/00865: {Applying coatings; tinting; colouring (printing, marking or copying processes B41M; identification in general G09F3/00; producing decorative effects in general B44C; positioning or marking of lenses B24B13/0055)}
- B29D 11/00894: {colouring or tinting}
- G02C 7/104: {having spectral characteristics for purposes other than sun-protection}
- G02C 7/12: Polarisers
- G02C 2202/16: Laminated or compound lenses
- G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The ophthalmic lens of claim 1, wherein the polarizing wafer construct comprises an inner polyvinyl alcohol polarizing layer residing between two outer layers, wherein each outer layer is independently made from polycarbonate, cellulose triacetate, polyamide, thermoplastic polyurethane, or poly(methyl methacrylate).

### Claim 3 (depends on 1)

The ophthalmic lens of claim 1, wherein the lens component configured to impart reduced light transmittance comprises a third light transmittance-reducing dye configured to impart a third region of reduced light transmittance having a center located between about 685 nanometers and 715 nanometers.