Claims
- 1. A multiple-range omnidirectional reflector comprising:
a plurality of bilayers, wherein each of said bilayers includes a first layer comprising a low absorption and low refractive index material and a second layer comprising a high refractive index and low absorption material, wherein multiple omnidirectional reflecting ranges are produced by varying the thickness of one or more of said bilayers.
- 2. The multiple-range omnidirectional reflector of claim 1, wherein said first layer and second layer have a defined thickness.
- 3. The multiple-range omnidirectional reflector of claim 2, wherein said first layer comprises Te.
- 4. The multiple-range omnidirectional reflector of claim 3, wherein said second layer comprises PE.
- 5. The multiple-range omnidirectional reflector of claim 4, wherein said first layer has a thickness of 0.8 μm.
- 6. The multiple-range omnidirectional reflector of claim 5, wherein said second layer has a thickness of 1.1 μm.
- 7. The multiple-range omnidirectional reflector of claim 6, wherein said reflection range of said multiple-range omnidirectional reflector is extended between 1200 to 800 cm−1.
- 8. The multiple-range omnidirectional reflector of claim 1, wherein said bilayers comprise a first set of 5 bilayers and a second set of 5 bilayers.
- 9. The multiple-range omnidirectional reflector of claim 8, wherein said first layer of each of said first and second set of 5 bilayers comprises Te.
- 10. The multiple-range omnidirectional reflector of claim 9, wherein said second layer of each of said first and second set of 5 bilayers comprises PE.
- 11. The multiple-range of omnidirectional reflector of claim 10, wherein said second set of 5 bilayers comprises a thickness that is 65% of the thickness of said first set of bilayers.
- 12. The multiple-range omnidirectional reflector of claim 11, wherein said high refractive index of said first layer of each of said first and second set of 5 bilayers is 4.6.
- 13. The multiple-range omnidirectional reflector of claim 12, wherein said low refractive index of said second layer of each of said first and second set of 5 bilayers is 1.6.
- 14. A method of providing multiple-range omnidirectional reflectivity in an omnidirectional reflector, said method comprising:
providing a plurality of bilayers wherein each of said bilayers includes a first layer comprising of a low absorption and low refractive index material and a second layer comprising of a high refractive index and low absorption material; and varying the thickness of one or more of said bilayers so that multiple omnidirectional reflecting range are produced.
- 15. The method of claim 14, wherein said first layer and second layer have a defined thickness that in combination equals to the thickness of a bilayer.
- 16. The method of claim 15, wherein said first layer comprises Te.
- 17. The method of claim 16, wherein said second layer comprises PE.
- 18. The method of claim 17, wherein said first layer has a thickness of 0.8 μm.
- 19. The method of claim 18, wherein said second layer has a thickness of 1.1 μm.
- 20. The method of claim 19, wherein said reflection ranges is extended between 1200 to 800 cm−1.
- 21. The method of claim 14, wherein said bilayers comprise a first set of 5 bilayers and a second set of 5 bilayers.
- 22. The method of claim 21, wherein said first layer of each of said first and second set of 5 bilayers comprises Te.
- 23. The method of claim 22, wherein said second layer of each of said first and second set of 5 bilayers comprises PE.
- 24. The method of claim 23, wherein said second set of 5 bilayers comprises a thickness that is 65% of the thickness of said first set of bilayers.
- 25. The method of claim 24, wherein said high refractive index of said first layer of each of said first and second set of 5 bilayers is 4.6.
- 26. The method of claim 25, wherein said low refractive index of said second layer of each of said first and second set of 5 bilayers is 1.6.
PRIORITY INFORMATION
[0001] This application claims priority from provisional application Ser. No. 60/350,728 filed Jan. 22, 2002, incorporated herein by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60350728 |
Jan 2002 |
US |