Blue light filter lenses
View Patent ↗The disclosure relates to ophthalmic lenses consisting of a front surface coating section made of a multi-layer structure that reflects digital blue light, a lens section, and a rear surface coating section made of a multi-layer structure that absorbs digital blue light while allowing higher energy blue light to pass through. The lens equalizes the light energy differences of the light exiting from the rear surface of the lens, offering a hi level of contrast perception and sharpness. The ophthalmic lenses employ photonic crystal thin films made from fully transparent nanostructures. The lenses fully block UV light while at the same time efficiently filtering blue light emitted from digital devices and monitors.
1. An ophthalmic lens consisting of a front surface coating section made of a multi-layer structure that reflects digital blue light, a lens section, and a rear surface coating section made of a multi-layer structure that absorbs digital blue light while allowing higher energy blue light to pass through.
2. The ophthalmic lens of claim 1 , wherein the rear surface coating section is formed so as to provide absorption mainly in a central portion of the multi-layer structure from which it is formed.
3. The ophthalmic lens of claim 2 , wherein the multi-layer structure of the rear surface coating section comprises a set of coatings made of nanotechnology material forming the associated multi-layer structure, this set of coatings providing blue light absorption areas of repeating regions of high and low dielectric constants of photonic crystals.
4. The ophthalmic lens of claim 3 , wherein the multi-layer structure of the rear surface coating section is disposed between layers of lens anti reflective coatings and activated in response to incident light of a frequency that matches that of harmful digital blue light.
5. The ophthalmic lens of claim 4 , further comprising a set of coatings disposed on the rear surface of the ophthalmic lens structure for protection against reflected UVA and UVB radiation from the rear surface coating section of the ophthalmic lens to prevent light rays from reflecting unfiltered back towards the eye.
6. The ophthalmic lens of claim 5 , wherein the ophthalmic lens has a blue tint coloration.
7. The ophthalmic lens of claim 6 , wherein the lens section is a made from 1.61 hi-refractive index plastic resins providing UVA and UVB protection.
8. The ophthalmic lens of claim 2 , wherein the lens equalizes the light energy differences of the light exiting from a rear surface of the lens to achieve a desired level of contrast perception and sharpness.
9. The ophthalmic lens of claim 8 , wherein the ophthalmic lens has blue tint coloration.
10. The ophthalmic lens of claim 9 , wherein the lens section is a made from 1.61 hi-refractive index plastic resins providing UVA and UVB protection.
11. The ophthalmic lens of claim 1 , wherein the front surface coating section includes a first set of coatings containing an outermost coating layer consisting of a superslick coat to provide hydrophobic and easy cleanining properties, a second set of coatings overlayins the outermost coating layer and made of multiple layers of antireflecting materials.
12. The opthalmic lens of claim 11 , further comprising a third set of coatings forming the front surface section containing transparent nanocomposite coating layers, and a fourth set of coatings made of multiple, blue light reflecting layers that reduce blue light propagation by 35-45% across a range of wavelengths.
13. The ophthalmic lens of claim 12 , wherein the ophthalmic lens has blue tint coloration.
14. The ophthalmic lens of claim 13 , wherein the lens section is a made from 1.61 hi-refractive index plastic resins providing UVA and UVB protection.
15. The ophthalmic lens of claim 14 , wherein the multi-layer structure of the rear surface coating section is disposed between layers of lens anti reflective coatings and activated in response to incident light of a frequency that matches that of harmful digital blue light.
16. The ophthalmic lens of claim 13 , further comprising a third set of coatings made of nanotechnology material forming the associated multi-layer structure, the third set of coatings providing blue light absorption areas of repeating regions of high and low dielectric constants of photonic crystals.
17. The ophthalmic lens of claim 13 , further comprising a fourth set of coatings disposed on the rear surface of the ophthalmic lens structure for protection against reflected UVA and UVB radiation from the rear surface coating section of the ophthalmic lens to prevent light rays from reflecting unfiltered back towards the eye.
18. The ophthalmic lens of claim 1 , wherein the rear surface coating section includes a first set of coatings on the back surface of the lens to provide strong scratch resistant rear surface, a second system of coatings comprised of a broadband multilayer system with high quality antireflective properties and hardness.
19. A frame for spectacle lenses made of thermo transfer material, wherein the frame is configured for use with an ophthalmic lens consisting of a front surface coating section made of a multi-layer structure that reflects digital blue light, a lens section, and a rear surface coating section made of a multi-layer structure that absorbs digital blue light while allowing higher energy blue light to pass through.
20. The frame of claim 19 , wherein absorbed digital light is transferred in the form of heat by the frame.