High performance selective light wavelength filtering
A system may be provided that comprises a substrate and a selective light wavelength filter that selectively blocks between 5 and 50% of light having a wavelength at or near 400-460 nm. The system may comprise any one of, or some combination of: a window, automotive glass, a light bulb, a flash bulb, fluorescent lighting, LED lighting, instrumentation, a display system, a visual system, a television, or a computer monitor.
1. A system comprising:
a substrate; and
a selective light wavelength filter;
wherein the selective light wavelength filter selectively blocks between 5 and 50% of light in a range of blue light wavelengths that includes 430 nm and blocks less light outside the range than within the range;
wherein the system comprises any one of, or some combination of: a window, automotive glass, a light bulb, a flash bulb, fluorescent lighting, LED lighting, instrumentation, a display system, a television, or a computer monitor; and
wherein the system exhibits a yellowness index of no more than 15.
2. The system of claim 1 , wherein the selective light wavelength filter comprises a dye or pigment.
3. The system of claim 2 , wherein the selective light wavelength filter is integral with the substrate.
4. The system of claim 1 , wherein the selective light wavelength filter comprises a film disposed on the substrate.
5. The system of claim 4 , wherein the film comprises an anti-reflective, hydrophobic, or scratch resistant coating disposed on the substrate.
6. The system of claim 1 , wherein the selective light wavelength filter comprises a visibility tint.
7. The system of claim 1 , wherein the selective light wavelength filter comprises a matrix of a light bulb or tube.
8. The system of claim 1 , wherein at least 80% of other portions of the visual electromagnetic spectrum are transmitted by the system.
9. The system of claim 1 , wherein at least 85% of other portions of the visual electromagnetic spectrum are transmitted by the system.
10. The system of claim 1 , wherein at least 90% of other portions of the visual electromagnetic spectrum are transmitted by the system.
11. The system of claim 1 , wherein at least 95% of other portions of the visual electromagnetic spectrum are transmitted by the system.
12. The system of claim 1 , wherein the selective light wavelength filter comprises a dye, and wherein the dye has an absorption spectrum having a Soret band.
13. The ophthalmic system of claim 1 , wherein the selective light wavelength filter comprises a pigment, and wherein the pigment comprises a synthetic or non-synthetic melanin, lutein, or zeaxanthin.
14. The system of claim 1 , further comprising UVA and UVB blocking.
15. The system of claim 1 , further comprising infra-red radiation blocking.
16. The system of claim 1 , wherein the system has a photopic luminous transmission of at least about 85%.
17. The system of claim 16 , wherein the system has a phototoxicity ratio of less than about 80%.
18. The system of claim 16 , wherein the system has a phototoxicity ratio of less than about 70%.
19. The system of claim 16 , wherein the system has a phototoxicity ratio of less than about 60%.
20. The system of claim 16 , wherein the ophthalmic system has a phototoxicty ratio of less than about 50%.
21. The system of claim 1 , wherein the system exhibits a yellowness index of no more than 10.
22. The system of claim 1 , wherein the system exhibits a yellowness index of no more than 9.
23. The system of claim 1 , wherein the system exhibits a yellowness index of no more than 7.
24. The system of claim 1 , wherein the system exhibits a yellowness index of no more than 5.
25. The system of claim 1 , wherein the range is between 400-460 nm.
26. The system of claim 1 , wherein the range is between 420-440 nm.
27. The system of claim 1 , wherein the range is between 410-450 nm.
28. The system of claim 1 , wherein the system is automotive glass.
29. The system of claim 28 , wherein the automotive glass is an automotive windshield.
30. The system of claim 4 , wherein the film comprises Polyvinyl Alcohol (PVA).
31. The system of claim 4 , wherein the film comprises Polyvinyl Butyral (PVB).
32. The system of claim 31 , wherein the system is automotive glass.
33. The system of claim 1 , wherein the size of the blocked range of blue light wavelengths has a full-width at half-maximum (FWHM) of less than about 30 nm, about 20 nm, about 10 nm, or about 5 nm.
34. The system of claim 1 , wherein the selective light wavelength filter comprises a rugate filter.