# US 12,601,930 B2 · Solar lens with super color enhancing properties

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- Number: US 12,601,930 B2
- Document ID: US12601930B2
- Status: Granted
- Kind: B2
- Application number: 17/779,399
- Filed: 2020-11-24
- Published: 2023-02-02
- Granted: 2026-04-14
- Earliest claimed: 2019-11-25
- Assignees: Essilor International
- Applicants: Essilor International
- Inventors: Jonathan Chalmey; Christelle Marck
- Web page: https://patentgrep.com/patent/US12601930B2

## CPC

- G02C 7/10: Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02B 5/223: {containing organic substances, e.g. dyes, inks or pigments}
- G02B 5/3025: {Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state (G02B5/3008, G02B5/3016 take precedence)}
- G02B 5/3033: {in the form of a thin sheet or foil, e.g. Polaroid}
- G02C 7/104: {having spectral characteristics for purposes other than sun-protection}
- G02C 7/108: {Colouring materials}
- G02C 7/12: Polarisers
- 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)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

An optical article partially transmits polarized glare in tunable colors that help a user to see surface contours, while enhancing the color and at the same time maintaining the appearance of the lens still neutral.

## Claims

### Claim 1

An optical article configured to color plane-polarized light transmitted through the optical article, the optical article having a color A and comprising:
an optical article base material;
a polarizing layer having a first color tint of color B; and
a second color tint of color C, wherein
a hue h2perp of perpendicularly polarized light transmitted through the optical article is in the blue range:
a lightness L2 in response to perpendicularly-polarized light transmitted through the optical article is greater than 20, and
the product L2*ΔT %[515-580nm] is greater than 200, where ΔT %[515-580nm] is a parameter describing the transmittance of randomly polarized light in the green-yellow range.

### Claim 2 (depends on 1)

The optical article of claim 1, wherein a difference in polarizing efficiency ΔPE(λ) of light transmitted through the optical article is at least 30% between a first visible wavelength and a second different visible wavelength in the range of 450 to 650 nm.

### Claim 3 (depends on 1)

The optical article of claim 1, wherein the color B is blue with h angle in the range [200, 320].

### Claim 4 (depends on 1)

The optical article of claim 1, wherein the color A is grey or brown or grey-green.

### Claim 5 (depends on 4)

The optical article of claim 4, wherein the color A has an a* ranging from −10 to 10 and a b* ranging from −10 to 10.

### Claim 6 (depends on 4)

The optical article of claim 4, wherein the color A has an a* ranging from 0 to 20 and a b* ranging from 25 to 45.

### Claim 7 (depends on 4)

The optical article of claim 4, wherein the color A has an a* ranging from −20 to 0 and a b* ranging from 0 to 20.

### Claim 8 (depends on 1)

The optical article of claim 1, wherein the total polarizing efficiency is between 10% and 90% in the 380 to 780 nm range and the visible light transmission τv % is between 8% and 18%.

### Claim 9 (depends on 1)

The optical article of claim 1, wherein the first color tint is provided within the polarizing layer.

### Claim 10 (depends on 1)

The optical article of claim 1, wherein the second color tint is provided within the polarizing layer, on a surface of the polarizing layer, on an additional film laminated on the polarizing layer, within the optical base material, or on a surface of the optical base material, or any combination thereof.

### Claim 11 (depends on 1)

The optical article of claim 1, wherein the second color tint is a mixture of dyes.

### Claim 12 (depends on 1)

The optical article of claim 1, wherein the optical article is a sunglass lens, a goggle lens, a contact lens, a helmet shield, a windshield, a vehicle window, or a building window.