Multi-layered microlens systems and related methods
Implementations of a microlens system may include a first layer including a first refractive index, the first layer including one or more substantially hemispherical elements formed therein; a second layer including a second refractive index coupled over the substantially hemispherical elements of the first layer; and a third layer including a third refractive index coupled over the second layer. A value of the first refractive index may be larger than a value of the third refractive index and a value of the second refractive index and the value of the second refractive index may be less than a value of the third refractive index.
1. A microlens system comprising:
a first layer comprising a first refractive index, the first layer comprising one or more substantially hemispherical elements;
a second layer comprising a second refractive index over the one or more substantially hemispherical elements of the first layer; and
a third layer comprising a third refractive index over the second layer, wherein the second layer is between the first layer and the third layer;
wherein a surface of the third layer facing away from the second layer comprises one or more curves corresponding in location to the one or more substantially hemispherical elements;
wherein a value of the first refractive index is larger than a value of the third refractive index and a value of the second refractive index; and
wherein the value of the second refractive index is less than the value of the third refractive index.
2. The system of claim 1 , wherein the first layer comprises a first single and continuous layer, wherein the second layer comprises a second single and continuous layer, and wherein the third layer comprises a third single and continuous layer.
3. The system of claim 1 , wherein the value of the first refractive index is 1.56 with 550 nm wavelength electromagnetic radiation.
4. The system of claim 1 , wherein the value of the second refractive index is 1.38 with 550 nm wavelength electromagnetic radiation.
5. The system of claim 1 , wherein the value of the third refractive index is 1.4 with 550 nm wavelength electromagnetic radiation.
6. The system of claim 1 , wherein the third layer comprises an antireflective coating.
7. The system of claim 1 , wherein a thickness of the second layer is 500 nm.
8. A microlens system comprising:
a first layer comprising a first refractive index, the first layer comprising one or more substantially hemispherical elements;
a second layer comprising a second refractive index contacting the one or more substantially hemispherical elements of the first layer; and
a third layer comprising a third refractive index contacting the second layer, wherein the second layer is between the first layer and the third layer;
wherein a surface of the first layer facing away from the second layer is substantially flat;
wherein the first layer comprises a single and continuous layer;
wherein a value of the first refractive index is larger than a value of the third refractive index and a value of the second refractive index; and
wherein the value of the second refractive index is less than the value of the third refractive index.
9. The system of claim 8 , wherein the second layer comprises a fluoropolymer.
10. The system of claim 8 , wherein the value of the first refractive index is 1.56 with 550 nm wavelength electromagnetic radiation.
11. The system of claim 8 , wherein the value of the second refractive index is 1.38 with 550 nm wavelength electromagnetic radiation.
12. The system of claim 8 , wherein the value of the third refractive index is 1.4 with 550 nm wavelength electromagnetic radiation.
13. The system of claim 8 , wherein the third layer comprises an antireflective coating.
14. The system of claim 8 , wherein a thickness of the second layer is 500 nm.
15. A microlens system comprising:
a first layer comprising a first refractive index, the first layer comprising one or more substantially hemispherical elements;
a second layer comprising a second refractive index contacting the one or more substantially hemispherical elements of the first layer; and
a third layer comprising a third refractive index contacting the second layer, wherein the second layer is between the first layer and the third layer;
wherein a surface of the first layer facing away from the second layer is substantially flat;
wherein the first layer comprises a single and continuous layer;
wherein a surface of the third layer facing away from the first layer comprises a plurality of curves;
wherein a value of the first refractive index is larger than a value of the third refractive index and a value of the second refractive index; and
wherein the value of the second refractive index is less than the value of the third refractive index.
16. The system of claim 15 , wherein the second layer comprises a fluoropolymer.
17. The system of claim 15 , wherein the value of the first refractive index is 1.56 with 550 nm wavelength electromagnetic radiation.
18. The system of claim 15 , wherein the value of the second refractive index is 1.38 with 550 nm wavelength electromagnetic radiation.
19. The system of claim 15 , wherein the value of the third refractive index is 1.4 with 550 nm wavelength electromagnetic radiation.
20. The system of claim 15 , wherein a thickness of the second layer is 500 nm.