High transmittance eyewear with chroma enhancement

Patent metadata

Field	Value
Publication number	US-12429714-B2
Application number	US-202017104439-A
Country	US
Kind code	B2
Filing date	Nov 25, 2020
Priority date	Nov 26, 2019
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

The present disclosure relates to a high transmittance eyewear. The high transmittance eyewear can include a lens with a chroma enhancement filter. The lens can have a front surface and a rear surface. The high transmittance eyewear can further include a transmittance enhancement layer disposed over the front surface of the lens. The high transmittance eyewear that includes the transmittance enhancement layer and the chroma enhancement filter can provide a high optical transparency (e.g., a high optical transmittance) for the wearer for an indoor or a driving use while maintaining a chroma enhancement capability provided by the chroma enhancement filter.

First claim

What is claimed is:

1. A high transmittance eyewear, comprising:
a lens comprising a chroma enhancement filter, the lens having a front surface and a rear surface, wherein the chroma enhancement filter comprises a chroma enhancement dye; and
a transmittance enhancement layer disposed over the front surface of the lens,
wherein:
an average chroma value of uniform intensity light transmitted through the high transmittance eyewear is increased as compared to a neutral lens the neutral lens being a lens with a transmittance profile across a spectral range of 430 nm to 780 nm being constant within 5% of an average transmittance of the neutral lens, the chroma value being the C* attribute of the CIE L*C*h* color space,
the high transmittance eyewear attenuates a portion of the light in a first spectral range of 440 nm to 520 nm,
a transmittance profile associated with the high transmittance eyewear comprises a first transmittance valley in the first spectral range, a minimum transmittance of the first transmittance valley has a first transmittance;
a transmittance profile associated with the lens comprises a second transmittance valley in the first spectral range, wherein a minimum transmittance of the second transmittance valley has a second transmittance less than the first transmittance;
a difference in transmittance between the transmittance profile associated with the high transmittance eyewear and the transmittance profile associated with the lens is between about 0.1% to about 15% for each wavelength across a spectral range between about 400 nm and about 700 nm;
a difference in an average optical transmittance of the high transmittance eyewear and an average optical transmittance of the neutral lens is less than 3% in a spectral range between 400 nm and 780 nm, and
an optical transmittance of the high transmittance eyewear is greater than 65% for each wavelength across a spectral range between 400 nm and 780 nm.

2. The high transmittance eyewear of claim 1 , wherein: a spectral absorbance profile associated with the high transmittance eyewear comprises a first absorbance peak in the first spectral range;
a maximum absorbance of the first absorbance peak has a first optical density; and
the first optical density is from 0.05 to 0.3.

3. The high transmittance eyewear of claim 1 , wherein the transmittance enhancement layer comprises an index-matching layer.

4. The high transmittance eyewear of claim 1 , wherein the transmittance enhancement layer comprises an anti-reflection layer.

5. The high transmittance eyewear of claim 1 , wherein the lens comprises a lens body, and the chroma enhancement filter comprises the chroma enhancement dye integrated into the lens body.

6. The high transmittance eyewear of claim 1 , wherein the lens comprises a lens body, and the chroma enhancement filter is separated from the lens body.

7. The high transmittance eyewear of claim 6 , wherein the chroma enhancement filter is an optical layer disposed between the transmittance enhancement layer and the lens body.

8. The high transmittance eyewear of claim 6 , wherein the chroma enhancement filter is an optical layer disposed between the lens body and the rear surface of the lens.

9. The high transmittance eyewear of claim 1 , further comprising an anti-reflection layer disposed over the rear surface of the lens, wherein an optical reflectivity at an exposed surface of the anti-reflection layer is less than 10% for each wavelength across the spectral range of 400 nm to 780 nm.

10. The high transmittance eyewear of claim 1 , further comprising:
a first hard coat layer disposed between the transmittance enhancement layer and the front surface of the lens; and
a second hard coat layer disposed over the rear surface of the lens.

11. The high transmittance eyewear of claim 1 , wherein the transmittance enhancement layer comprises magnesium fluoride.

12. The high transmittance eyewear of claim 1 , wherein the transmittance enhancement layer comprises a multilayer index coating.

13. The high transmittance eyewear of claim 1 , wherein the high transmittance eyewear comprises a color neutral appearance with an L* attribute, an a* attribute, and a b* attribute in the CIE L*a*b* color space, wherein the square root of the sum of the square of a* and b* is less than 15.

14. The high transmittance eyewear of claim 1 , wherein a yellowness index of the high transmittance eyewear is less than 23.

15. The high transmittance eyewear of claim 1 , wherein the high transmittance eyewear further attenuates a portion of light transmitted through the high transmittance eyewear in a second spectral range of 540 nm to 620 nm, wherein a maximum absorbance of an absorbance peak in the second spectral range has an optical density between 0.05 and 0.3.

16. The high transmittance eyewear of claim 1 , wherein the high transmittance eyewear further attenuates a portion of light transmitted through the high transmittance eyewear in a second spectral range of 620 nm to 700 nm, wherein a maximum absorbance of an absorbance peak in the second spectral range has an optical density between 0.01 and 0.15.

17. The high transmittance eyewear of claim 1 , wherein a visible light transmittance (VLT) of the high transmittance eyewear is greater than 80%.

18. The high transmittance eyewear of claim 1 , wherein another chroma value of uniform intensity light transmitted through the lens is increased as compared to a neutral lens that uniformly transmits a same average percentage of light across the visible spectrum as the lens, by attenuating a portion of the light transmitted through the lens in the first spectral range of 440 nm to 520 nm, the chroma value being the C* attribute of the CIE L*C*h* color space, and wherein the average chroma value associated with the high transmittance eyewear is substantially equal to the other average chroma value associated with the lens.

19. The high transmittance eyewear of claim 1 , wherein the optical transmittance of the high transmittance eyewear is greater than 70% for each wavelength across the spectral range between 400 nm and 780 nm.

Assignees

• Oakley Inc

Inventors

• Saylor Ryan
• Mccabe Brock Scott

Classifications

• G02C7/102

  Photochromic filters · CPC title

• G02C7/028

  Special mathematical design techniques · CPC title

• G02C7/104 Primary

  having spectral characteristics for purposes other than sun-protection · CPC title