Optical element for correcting color blindness

• US 9,574,067 B2
• Filed: 07/22/2014
• Issued: 02/21/2017
• Est. Priority Date: 08/05/2011
• Status: Active Grant

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: Harding, Brett T., Li, Sheng, Mochizuki, Amane
• Primary Examiner(s): Salamon, Peter A
• Application Number:
  US14/338,176
• Publication Number:
  US 20140336303A1
• Time in Patent Office: 945 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61F 2/16 Intraocular lenses
• CPC Class Codes: A61F 2002/1699 Additional features not otherwise provided for
• CPC Class Codes: C08K 2201/001 Conductive additives
• CPC Class Codes: C08K 5/29 Compounds containing one or more carbon-to-nitrogen double bonds
• CPC Class Codes: C08K 5/315 Compounds containing carbon-to-nitrogen triple bonds
• CPC Class Codes: C08L 101/12 characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity liquid crystal materials or compositions C09K19/00
• CPC Class Codes: C09B 3/20 by halogenation
• CPC Class Codes: C09B 57/00 Other synthetic dyes of known constitution
• CPC Class Codes: C09B 57/008 Triarylamine dyes containing no other chromophores
• CPC Class Codes: C09B 69/102 containing a perylene dye
• CPC Class Codes: C09B 69/103 containing a diaryl- or triarylmethane dye
• CPC Class Codes: C09B 69/109 containing other specific dyes
• CPC Class Codes: C09K 11/025 non-luminescent particle coatings or suspension media
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: C09K 2211/1014 bridged by heteroatoms, e.g. N, P, Si or B
• CPC Class Codes: C09K 2211/1044 containing two nitrogen atoms as heteroatoms
• CPC Class Codes: C09K 2211/1055 with other heteroatoms
• CPC Class Codes: C09K 2323/031 Polarizer or dye
• CPC Class Codes: F21V 5/10 : comprising photoluminescent material
• CPC Class Codes: F21V 9/06 : for filtering out ultraviolet radiation
• CPC Class Codes: F21V 9/08 : for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: F21V 9/30 : Elements containing photoluminescent material distinct from or spaced from the light source shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40
• CPC Class Codes: G02B 1/04 : made of organic materials, e.g. plastics G02B1/08 takes precedence
• CPC Class Codes: G02B 1/041 : Lenses
• CPC Class Codes: G02B 1/043 : Contact lenses
• CPC Class Codes: G02C 7/04 : Contact lenses for the eyes disinfection or sterilisation of contact lenses A61L12/00
• CPC Class Codes: G02C 7/049 : Contact lenses having special fitting or structural features achieved by special materials or material structures
• CPC Class Codes: G02C 7/104 : having spectral characteristics for purposes other than sun-protection
• CPC Class Codes: G06F 3/041 : Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G09G 3/30 : using electroluminescent panels

Abstract

Described herein are devices, compositions, and methods for improving color discernment.

Claims

1. A device for correcting a vision deficiency related to color discernment comprising an optical element:

wherein the optical element is an intraocular lens, a contact lens, an electronic display, or an item of eyewear comprising;

a composition comprising rhodamine 6G in an amount of about 4% (w/w) to about 6% (w/w) and a polymer that is poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) having an average molecular weight in a range of about 170,000 g/mol to about 250,000 g/mol, and in an amount of about 90% (w/w) to about 96% (w/w);

wherein the composition is solid.

2. The device of claim 1, wherein the optical element has a peak wavelength of visible absorption of about 520 nm to about 540 nm and a peak wavelength of visible emission of about 550 nm to about 570 nm.

3. The device of claim 1, wherein the rhodamine 6G is about 2% (w/w) to about 10% (w/w) of the composition.

4. The device of claim 1, wherein the polymer is a combination of repeat unit a, repeat unit b, and repeat unit c:

5. The device of claim 4, wherein R^o is CH₂CH₂CH₃.

6. The device of claim 4, wherein R^p is CH₃.

7. The device of claim 1, wherein the optical element has a median wavelength of visible absorption of about 510 nm to about 550 nm.

8. The device of claim 7, wherein the optical element has a median wavelength of visible emission of about 540 nm to about 580 nm.

9. The device of claim 1, wherein the optical element has an average wavelength of visible absorption of about 510 nm to about 550 nm.

10. The device of claim 9, wherein the optical element has an average wavelength of visible emission of about 540 nm to about 580 nm.

11. The device of claim 1, wherein the optical element has a peak wavelength of visible absorption of about 510 nm to about 550 nm.

12. The device of claim 11, wherein the optical element has a peak wavelength of visible emission of about 540 nm to about 580 nm.

13. The device of claim 1, wherein the optical element is an intraocular lens.

14. The device of claim 1, wherein the optical element is a hard or soft contact lens.

15. The device of claim 1, wherein the optical element is an electronic display.

16. The device of claim 1, wherein the optical element is an item of eyewear.

17. The device of claim 16, wherein the item of eyewear is eyeglasses or sunglasses.