Device for the prevention of melationin suppression by light at night

1. A device for inhibiting melatonin suppression by light comprising: means for selectively blocking more than 50 percent of incident wavelengths of light having a wavelength range less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, wherein the device inhibits the light-induced suppression of melatonin production by light exposure when used at night.

2. A device according to claim 1 , wherein the means for selectively blocking light is an optical filter.

3. A device according to claim 2 , comprising the optical filter which includes a polarizing layer.

4. A device according to claim 1 , wherein the device further comprises an ultraviolet light absorber.

5. A device according to claim 2 , comprising at least one of eyewear, a lightbulb, a light cover and a lens.

6. A lens operable by a user who is exposed to light at peak melatonin production times at night, the lens comprising an optical filter operable to selectively block more than 50 percent of incident wavelengths of light having a wavelength range less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, wherein the lens inhibits the suppression of melatonin production of by light when used at peak melatonin production times.

7. A lens according to claim 6 , wherein the lens is incorporated in eyewear.

8. A lens according to claim 7 , wherein the eyewear is selected from the group consisting of spectacles, goggles, contact lenses and safety glasses.

9. A light device comprising an optical filter operable to selectively block more than 50 percent of incident wavelengths of light from the light device having a wavelength that suppresses melatonin production in a human of less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light.

10. A light device according to claim 9 , wherein the light device is chosen from an incandescent light source, a fluorescent light source or any other artificial light source.

11. A light device according to claim 9 , wherein the optical filter is a coating on at least one surface of the device.

12. A light cover for use with a light device, the cover comprising: an optical filter operable to selectively block more than 50 percent of incident wavelengths of light from the light device having a wavelength that suppresses melatonin production in a human of less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, the cover being operable to releasably attach to the light source to channel the light emitted from the light source therethrough.

13. A method for inhibiting melatonin suppression by light in a human comprising providing the device according to claim 2 during peak melatonin production times thereby selectively blocking more than 50 percent of incident wavelengths of light having a wavelength range less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, the device being operable to selectively block light, having a wavelength range less than at or about 530 nm, from reaching the retina in a human for inhibiting melatonin suppression by light.

14. A method for inhibiting melatonin suppression by light in a human comprising providing the device according to claim 1 , during peak melatonin production times thereby selectively blocking more than 50 percent of incident wavelengths of light having a wavelength range less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, the device being operable to selectively block light, having a wavelength range less than at or about 530 nm, from reaching the retina in a human for inhibiting melatonin suppression by light.

15. A device for inhibiting melatonin suppression by light comprising: means for selectively blocking more than 50 percent of incident wavelengths of light having a wavelength that suppresses melatonin production in a human and is less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, wherein the device inhibits melatonin suppression by light exposure when worn at night.

16. A device according to claim 15 , wherein the means for selectively blocking light is an optical filter.

17. A device according to claim 16 , comprising at least one of eyewear and a lens.

18. A lens operable by a user who is exposed to light at peak melatonin production times, the lens comprising an optical filter operable to selectively block more than 50 percent of incident wavelengths of light having a wavelength that suppresses melatonin production in a human and is less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, wherein the lens inhibits melatonin suppression by light when used at peak melatonin production times at night.

19. A lens according to claim 18 , wherein the lens is incorporated into eyewear.

20. A lens according to claim 19 , wherein the eyewear is selected from the group consisting of spectacles, goggles, contact lenses and safety glasses.

21. A method for inhibiting melatonin suppression by light in a human comprising providing the device according to claim 15 during peak melatonin production times thereby selectively blocking more than 50 percent of incident wavelengths of light having a wavelength that suppresses melatonin production in a human and is less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, the device being operable to selectively block light having a wavelength that suppresses melatonin production in a human, and is less than at or about 530 nm, from reaching the retina in a human.

22. A method for inhibiting melatonin suppression by light in a human comprising providing the lens according to claim 18 during peak melatonin production times thereby selectively blocking more than 50 percent of incident wavelengths of light having a wavelength that suppresses melatonin production in a human and is less than at or about 530 nm, while transmitting more than 50 percent of non-blocked wavelengths of light, the lens being operable to selectively block light having a wavelength that suppresses melatonin production in a human, and is less than at or about 530 nm, from reaching the retina in a human.