LED Diffusion Techniques

• US 20100213835A1
• Filed: 02/11/2010
• Published: 08/26/2010
• Est. Priority Date: 02/11/2009
• Status: Active Grant

• Current Assignee: Anthony Mo, Michael Palazzi
• Original Assignee: Anthony Mo, Michael Palazzi
• Inventors: Palazzi, Michael, Mo, Anthony
• Granted Patent: US 8,125,127 B2
• Time in Patent Office: Days
• US Class Current: 313/512
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• CPC Class Codes: F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21V 3/06 characterised by the material
• CPC Class Codes: F21V 3/061 the material being glass
• CPC Class Codes: F21V 3/062 the material being plastics
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21V 7/28 characterised by coatings
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An article of manufacture, comprising: at least one point source of light which emits a light beam; and at least one reflective means for diffusing the light and/or converting the light to a different color range. The goal of this invention is to greatly increase the energy efficiency of area lighting by the use of highly efficient beams light sources.

Claims

1. An article of manufacture, comprising:

at least one point source of light which emits a light beam; and

at least one reflective means for diffusing the light.

2. The article of claim 1, wherein the point source of light is an LED.

3. The article of claim 2, wherein the point source of light and the reflective means are contained in a bulb.

4. The article of claim 3, wherein the reflective means is at least one reflector in the shape of a beveled washer in perpendicular orientation to the light beam.

5. The article of claim 3, wherein the reflective means is a plurality of reflectors in the shape of a beveled washer in perpendicular orientation to the light beam.

6. The article of claim 5, wherein each reflector only reflects a portion of the light beam.

7. The article of claim 5, wherein each reflective beveled washer has a bevel angle and the bevel angle of at least one reflective beveled washer differs from the bevel angle of another reflective beveled washer.

8. The article of claim 3, wherein the reflective means is at least one cone shaped reflector.

9. The article of claim 3, wherein the reflective means is a plurality of cone shaped reflectors.

10. The article of claim 9, wherein each reflector only reflects a portion of the light beam.

11. The article of claim 1, wherein the reflective means can be adjusted to adjust the light diffusion.

12. The article of claim 1, wherein the point source of light is replaceable.

13. The article of claim 2, wherein the point source of light and the reflective means are contained in a tube.

14. The article of claim 13, wherein the tube has a length and a width, and the width has a circular shape or a semi-circular shape.

15. The article of claim 14, wherein the reflective means is a plurality of reflectors in the shape of a beveled washer in perpendicular orientation to the light beam and the reflectors are located along the length of the tube.

16. The article of claim 1, wherein the point source of light and the reflective means are contained in a bulb or tube, and the tube or bulb contains a suspension of light reflecting or converting particles such as those coated with a phosphorus compound.

17. The article of claim 16, wherein the suspension is in a liquid phase which can be cured and the light reflecting particles are oriented prior to curing.

18. The article of claim 17, wherein the light reflecting particles are oriented with an electromagnetic field.

19. The article of claim 17, wherein the light reflecting particles are oriented mechanically.

20. The article of claim 16, wherein the light reflecting particle is translucent and disperses light at least two directions.

21. The article of claim 13, wherein the tube is a fiber having a variable gradient.

22. The article of claim 16, wherein the suspension can be moved by heat or other external force.

23. The article of claim 1, wherein phosphorous is disposed on the reflective means and the phosphorous converts the light beam to a different color.

24. The article of claim 1, wherein the light source is comprised of separate multi colored light sources, and the separate multi colored light sources combine to provide a specific color though fixed or variable mixing.