Light insertion and dispersion system

• US 20050084229A1
• Filed: 10/18/2004
• Published: 04/21/2005
• Est. Priority Date: 10/20/2003
• Status: Abandoned Application

• Current Assignee: Neil L. Mcclure, Victor Babbitt
• Original Assignee: Neil L. Mcclure, Victor Babbitt
• Inventors: Babbitt, Victor, McClure, Neil L.
• Application Number:
  US10/967,543
• Publication Number:
  US 20050084229A1
• Time in Patent Office: Days
• US Class Current: 385/146
• CPC Class Codes: G02B 6/0003 the light guides being doped with fluorescent agents
• CPC Class Codes: G02B 6/001 the light being emitted along at least a portion of the lateral surface of the fibre

Abstract

A light source injects light into a translucent light guide, particularly using high-power LEDs. A core to the light guide contains a homogenous mixture of fluid and a light dispersing agent to effect scattering. Scattered light passes though the light guide and may be used for illumination. A high power LED is provided with a reflector and heat sink to disperse waste heat, increasing the efficiency and life of the LED.

Claims

1. In a light guide system that operates on the principle of total internal reflectance (TIR) between a core and a cladding along an optical pathway, the improvement comprising:

the cladding being translucent;

the core being liquid; and

a light dispersing agent distributed in the core to provide a substantially even disruption of TIR along the optical pathway such that disrupted light passes through the cladding.

2. The light guide system of claim 1, wherein the liquid has a majority component of mineral oil.

3. The light guide system of claim 1, wherein the light dispersing agent is selected from the group consisting of titanium dioxide and alumina.

4. The light guide system of claim 1, wherein the light dispersing agent comprises titanium dioxide.

5. The light guide system of claim 1, wherein the light dispersing agent is comprised of particles in the range of 0.1 to 1 micron.

6. The light guide system of claim 1, wherein the dispersing agent is a colloidal suspension within the core.

7. The light guide system of claim 1, configured and arranged as a promotional sign.

8. The light guide system of claim 1, constructed and arranged as a channel letter.

9. The light guide system of claim 1, constructed and arranged as a flexible. liquid filled tube.

10. The light guide system of claim 1, wherein the translucent optical guide comprises flat panels.

11. The light guide system of claim 1, constructed and arranged as an item selected from the group consisting of safety lights, automotive lights, recreational lights, boat lights, swimming pool lights, boat mast lights, and hot tub lights.

12. The light guide system of claim 1, constructed and arranged as an item selected from the group consisting of solar powered outdoor trim lights, interior baseboard lights, building trim lights, interior mood lights, home holiday lights, and personal signs.

13. The light guide system of claim 1, constructed and arranged as an item selected from the group consisting of necklaces, bangles, clothing trim, a clothing accent, and a toy.

14. The light guide system of claim 1, constructed and arranged as a carnival ride light.

15. The light guide system of claim 1, constructed and arranged as an item selected from the group consisting of a lighted bike helmets and a lighted bike frame.

16. The light guide system of claim 1, wherein the light source is immersed in the core.

17. In a light guide system that operates on the principle of total internal reflectance (TIR) between a core and a cladding along an optical pathway, the improvement comprising:

the cladding being translucent;

the core being gel; and

a light dispersing agent distributed in the core to provide a disruption of TIR along the optical pathway such that disrupted light passes through the cladding.

18. The light guide system of claim 17, wherein the gel has a majority component of mineral oil.

19. The light guide system of claim 17, wherein the light dispersing agent is selected from the group consisting of titanium dioxide and alumina.

20. The light guide system of claim 17, wherein the light dispersing agent comprises titanium dioxide.

21. The light guide system of claim 17, wherein the light dispersing agent is comprised of particles in the range of 0.1 to 10 microns

22. The light guide system of claim 17, wherein the dispersing agent is a colloidal suspension within the core.

23. The light guide system of claim 17, configured and arranged as a promotional sign.

24. The light guide system of claim 17, constructed and arranged as a channel letter.

25. The light guide system of claim 17, constructed and arranged as a flexible. liquid filled tube.

26. The light guide system of claim 17, wherein the translucent optical guide comprises flat panels.

27. The light guide system of claim 17, constructed and arranged as an item selected from the group consisting of safety lights, automotive lights, recreational lights, boat lights, swimming pool lights, boat mast lights, and hot tub lights.

28. The light guide system of claim 17, constructed and arranged as an item selected from the group consisting of solar powered outdoor accent lights, interior baseboard lights, building trim lights, interior mood lights, home holiday lights, and personal signs.

29. The light guide system of claim 17, constructed and arranged as an item selected from the group consisting of necklaces, bangles, clothing trim, a clothing accent, and a toy.

30. The light guide system of claim 17, constructed and arranged as a carnival ride light.

31. The light guide system of claim 17, constructed and arranged as an item selected from the group consisting of a lighted bike helmets and a lighted bike frame.

32. The light guide system of claim 17, wherein the light source is immersed in the core.

33. The light guide system of claim 17, wherein the concentration of the light dispersing agent is varied along the optical pathway to correspondingly vary the disruption of TIR along the optical pathway.

34. The light guide system of claim 33, wherein the concentration of light dispersing agent is varied along the optical pathway wherein the proportional distribution provides even distribution of light through the cladding along the entire waveguide.

35. The light guide system of claim 33, wherein the concentration of light dispersing agent is varied to create illuminated objects within the light guide.

36. The light guide system of claim 35, wherein the object is three dimensional.

37. The light guide system of claim 33, wherein the light source is immersed in the core.

38. In a light guide system that operates on a combination of the principle of total internal reflectance (TIR) between a core and a cladding, and normal optical reflection along an optical pathway, the improvement comprising:

the cladding being translucent;

the core being one of a gel and a liquid; and

a light dispersing agent distributed in the core to provide a disruption of TIR along the optical pathway, or disruption in reflected light, such that disrupted light passes through the cladding.

39. The light guide system of claim 38, wherein the core has a majority component of mineral oil.

40. The light guide system of claim 38, wherein the light dispersing agent is selected from the group consisting of titanium dioxide and alumina.

41. The light guide system of claim 38, wherein the light dispersing agent comprises titanium dioxide.

42. The light guide system of claim 38, wherein the light dispersing agent is comprised of particles in the range of 0.1 to 10 microns

43. The light guide system of claim 38, wherein the dispersing agent is a colloidal suspension within the core.

44. The light guide system of claim 38, constructed and arranged as a promotional sign.

45. The light guide system of claim 38, constructed and arranged as a channel letter.

46. The light guide system of claim 38, constructed and arranged as a flexible. filled tube.

47. The light guide system of claim 38, wherein the translucent optical guide comprises flat panels.

48. The light guide system of claim 38, wherein the light source is immersed in the core.

49. The light guide system of claim 38, wherein the concentration of the light dispersing agent is varied along the optical pathway to correspondingly vary the disruption of TIR along the optical pathway.

50. The light guide system of claim 49, wherein the concentration of light dispersing agent varies along the optical pathway such that the proportional distribution provides even distribution of light through the cladding along the entire waveguide.

51. The light guide system of claim 49, wherein the concentration of light dispersing agent is varied to create illuminated objects within the light guide.

52. The light guide system claim 51, wherein the object is a three dimensional object.

53. The light guide system of claim 49, wherein the light source is immersed in the core.

54. A core with a first index of refraction for use in a light guide system that operates on the principle of total internal reflectance (TIR) between a core and a cladding along an optical pathway, the improvement comprising:

the core including a colloidal suspension of suboptical particles of high refractive index in a substantially clear liquid or gel, the particles having an increased second index of refraction.

55. The core liquid of claim 54, wherein the suboptical particles comprise titanium dioxide.

56. The core liquid of claim 54, wherein the suboptical particles are of a size ranging from 5 nM to 100 nM.

57. An LED assembly for illumination of a light guide comprising:

an LED die supported by a substrate;

electrical contacts configured to provide power for activation of the LED die to emit light;

a reflector bonded to the substrate and operable to direct light from the LED die along an optical pathway when the LED die is activated for emission of the light.

58. The LED assembly of claim 57, wherein the reflector has a frustoconical shape.

59. The method of claim 57, wherein the light source simultaneously emits multiple wavelengths.

60. The method of claim 57, wherein the multiple wavelengths are within the visible color spectrum.

61. An LED assembly for heat sinking of excess heat from an LED assembly for illumination of a light guide comprising:

an LED die supported by a substrate; and

electrical contacts configured to provide power for activation of the LED die to emit light;

wherein the LED assembly is immersed in the light guide core.

62. The LED assembly of claim 61, wherein there is a reflector thermally bonded to the substrate and operable to direct light from the LED die along an optical pathway when the LED die is activated for emission of the light, the reflector being operable to communicate waste heat into the core.

63. The LED assembly of claim 61, wherein the LED die is in direct contact with the core to communicate waste heat directly into the core.

64. The method of claim 61, wherein the light source simultaneously emits multiple wavelengths.

65. The method of claim 61, wherein the multiple wavelengths are within the visible color spectrum.

78. The LED assembly of claim 61, wherein there is a reflector connected o the substrate and operable to direct light from the LED die along the optical pathway when the LED die is activated for emission of the light, the reflector being operable to communicate waste heat into the core.

66. A method of compensating for expansion and contraction of a core in a liquid or gel core light guide system comprising:

illuminating the core on an optical pathway that extends forward from one or more sources embedded within the core; and

compensating for core expansion from behind the illumination source, thereby preventing disruption of the optical path.

67. The method of claim 66, wherein the step of illuminating occurs in an unsealed light guide.

68. The method of claim 66, wherein the step of illuminating occurs in a sealed light guide, and further comprising a step of compensating for pressure changes inside the light guide from a position behind the illumination source.

69. The method of claim 68, wherein the step of compensating includes reorienting the light guide form one position to another by rotational movement without producing bubbles that move into the optical path of the light guide.

70. A light-guide system comprising:

a core made of at least one of a liquid and a gel;

an illumination source embedded into the core; and

means for compensating expansion and contraction of the core from a position behind the illumination source, such that there is no disruption of the optical path by the compensating means.

71. A light guide system comprising:

a core made of at least one of a liquid and a gel;

an illumination source embedded into the core; and

a light dispersing agent distributed in the core to provide a disruption of TIR along the optical pathway such that disrupted light passes through the cladding.

72. A light guide system comprising:

a liquid or gel core;

an illumination source embedded into the core;

wherein the illumination source is cooled directly by contact with the core.

73. The light guide system of claim 72, where there is a reflector thermally bonded or manufactured as part of the substrate and operable to direct light from the LED die along an optical pathway when the LED die is activated for emission of the light, where the reflector radiates waste heat into the core.

74. The LED assembly of claim 72, wherein the LED die is in direct contact with the core to communicate waste heat directly into the core.

75. A light guide system comprising:

a core made of at least one of a liquid and a gel;

an illumination source embedded into the core and positioned to project light forward onto an optical pathway; and

a compensator for expansion and contraction of the core of the light guide.

76. A light guide system comprising:

a core made of at least one of a liquid and a gel;

an illumination source embedded into the core positioned to project light forward onto an optical pathway;

wherein the illumination source is cooled directly by contact with the core; and

a compensator for expansion and contraction of the core from a position behind the illumination source.

77. A light guide system comprising:

a core made of at least one of a liquid and a gel;

an illumination source embedded into the core and positioned to project light forward onto an optical pathway;

a light dispersing agent distributed in the core to provide a disruption of TIR along the optical pathway such that disrupted light passes through the cladding; and

a compensator for expansion and contraction of the core of the light guide system from a position behind the illumination source.