Eyewear with chroma enhancement

Patent metadata

Field	Value
Publication number	US-11474382-B2
Application number	US-201916504143-A
Country	US
Kind code	B2
Filing date	Jul 5, 2019
Priority date	Apr 15, 2010
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in certain spectral bands. At least some of the spectral bands can include spectral features that tend to substantially increase the colorfulness, clarity, and/or vividness of a scene. In certain embodiments, eyewear incorporates an optical filter that enhances chroma within one or more spectral bands. In some embodiments, a wearer of the eyewear can perceive the increase in chroma when viewing at least certain types of scenes.

First claim

What is claimed is:

1. An eyewear comprising an optical filter configured to attenuate visible light in a plurality of spectral bands, the plurality of spectral bands comprising an absorbance peak having a maximum absorbance with a spectral bandwidth, and an absorptance peak having a maximum absorptance, wherein:
the maximum absorbance of the absorbance peak is located at a first spectral range from about 560 nm to about 600 nm;
the spectral bandwidth, equal to the full width of the absorbance peak at 80% of the maximum absorbance of the absorbance peak, associated with the first absorbance peak is less than or equal to 35 nm;
the maximum absorptance of the absorptance peak is located at a second spectral range from about 465 nm to about 535 nm; and
the maximum absorptance of the absorptance peak is from about 90% to about 100%.

2. The eyewear of claim 1 , wherein the spectral bandwidth of the absorbance peak is less than or equal to 30 nm.

3. The eyewear of claim 1 , wherein the spectral bandwidth of the absorbance peak is less than or equal to 20 nm.

4. The eyewear of claim 1 , wherein each of the plurality of spectral bands further comprises an attenuation factor obtained by dividing an integrated absorbance peak area within the spectral bandwidth by the spectral bandwidth of the absorbance peak, wherein the attenuation factor of the absorbance peak is greater than or equal to about 0.5 and less than about 1.

5. The eyewear of claim 1 , wherein the optical filter further comprises an other absorbance peak associated with the absorptance peak, wherein the other absorbance peak is located at the second spectral range from about 465 nm to about 535 nm.

6. The eyewear of claim 1 , wherein the optical filter is configured to increase an average chroma value of uniform intensity light stimuli having a bandwidth of 30 nm transmitted through the optical filter at least partially within the first spectral range from about 560 nm to about 600 nm as compared to a neutral filter that uniformly attenuates the same average percentage of light as the optical filter within the first spectral range.

7. The eyewear of claim 1 , wherein the optical filter comprises a lens body and an optical interference stack disposed over the lens body.

8. The eyewear of claim 1 , wherein the optical filter comprises a lens body and an anti-reflection layer disposed over the lens body.

9. The eyewear of claim 1 , wherein the optical filter comprises one or more organic dyes.

10. The eyewear of claim 1 , wherein the optical filter comprises one or more rare earth oxides.

11. An eyewear comprising an optical filter configured to attenuate visible light in a plurality of spectral bands, each of the plurality of spectral bands comprising an absorptance peak having a maximum absorptance, wherein:
the optical filter comprises a first absorptance peak;
the maximum absorptance of the first absorptance peak is located at a wavelength from about 465 nm to about 535 nm; and
a luminous transmittance associated with the optical filter is from about 1% to about 20%.

12. The eyewear of claim 11 , wherein the luminous transmittance associated with the optical filter is from about 5% to about 18%.

13. The eyewear of claim 11 , wherein the first absorptance peak is associated with a spectral bandwidth equal to full width of the first absorptance peak at the maximum absorptance plus 2% absorptance, wherein the spectral bandwidth is greater than about 10 nm.

14. The eyewear of claim 11 , wherein the optical filter further comprises a second absorptance peak located at a wavelength from about 560 nm to about 600 nm.

15. The eyewear of claim 11 , wherein the optical filter further comprises a second absorptance peak located at a wavelength from about 630 nm to about 670 nm.

16. The eyewear of claim 11 , wherein the optical filter comprises one or more organic dyes.

17. An eyewear comprising an optical filter, configured to attenuate visible light in a plurality of spectral bands, and a functional layer disposed over the optical filter, each of the plurality of spectral bands comprising an absorptance peak having a maximum absorptance, wherein:
a spectral bandwidth is equal to the full width of the absorptance peak at 80% of the maximum absorptance of the absorptance peak;
the optical filter comprises a first absorptance peak and a second absorptance peak;
the maximum absorptance of the first absorptance peak is located at a wavelength from about 440 nm to about 510 nm;
the spectral bandwidth of the first absorptance peak is less than or equal to about 50 nm;
the maximum absorptance of the second absorptance peak is located at a wavelength from about 560 nm to about 600 nm; and
an absolute difference between the maximum absorptance of the first absorptance peak and the maximum absorptance of the second absorptance peak is from about 0% to about 20%.

18. The eyewear of claim 17 , wherein the functional layer comprises an anti-reflection coating layer, an index-matching layer, a hard coat layer, a polarizing layer, a photochromic layer, or an electrochromic layer.

19. The eyewear of claim 17 , wherein the optical filter has a CIE chromaticity x value within a range from about 0.3 to about 0.38.

20. The eyewear of claim 17 , wherein the optical filter has a CIE chromaticity y value within a range from about 0.31 to about 0.39.

Assignees

• Oakley Inc

Inventors

• Mccabe Brock Scott
• Saylor Ryan
• Reyes Carlos D

Classifications

• G02C7/104 Primary

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

• G02C7/12

  Polarisers · CPC title

• G02C2202/16

  Laminated or compound lenses · CPC title

• B29L2012/005

  Spectacle frames · CPC title

• G02C7/108

  Colouring materials · CPC title