Article and method for color and intensity balanced solid state light sources

• US 20090221106A1
• Filed: 02/27/2009
• Published: 09/03/2009
• Est. Priority Date: 03/01/2008
• Status: Abandoned Application

• Current Assignee: Goldeneye, Inc.
• Original Assignee: Goldeneye, Inc.
• Inventors: Livesay, William R., Beeson, Karl W., Zimmerman, Scott M., Ross, Richard L.
• Application Number:
  US12/380,444
• Publication Number:
  US 20090221106A1
• Time in Patent Office: Days
• US Class Current: 438/29
• CPC Class Codes: H01L 2933/0041 relating to wavelength conversion elements
• CPC Class Codes: H01L 33/508 having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer, wavelength conversion layer with a concentration gradient of the wavelength conversion material

Abstract

Subtractive and/or additive techniques can adjust both color and/or intensity in solid wavelength conversion materials.

Claims

1. A subtractive method of balancing color and intensity of a light emitted from a light source comprising

forming a light source of a solid wavelength conversion element on a solid state light source, and

removing portions of said solid wavelength conversion element.

2. The subtractive method of balancing color and intensity of a light emitted from a light source of claim 1 wherein said solid state light source is a light emitting diode.

3. The subtractive method of balancing color and intensity of a light emitted from a light source of claim 1 wherein said removing portions of said solid wavelength conversion element forms at least one hole in said solid wavelength conversion element.

4. The subtractive method of balancing color and intensity of a light emitted from a light source of claim 1 wherein said removing portions of said solid wavelength conversion element forms at least one groove in said solid wavelength conversion element.

5. The subtractive method of balancing color and intensity of a light emitted from a light source of claim 1 wherein said removing portions of said solid wavelength conversion element is by means including, but not limited to, laser ablation, mechanical means, sandblasting, plasma etching, photochemical etching, chemical etching, RIE etching and ion beam milling of at least a portion of said solid wavelength conversion element.

6. The subtractive method of balancing color and intensity of a light emitted from a light source of claim 1 further comprising

adding portions of a solid wavelength conversion material to said solid wavelength conversion element.

7. The subtractive method of balancing color and intensity of a light emitted from a light source of claim 1 wherein said solid wavelength conversion element is a luminescent element.

8. An additive method of balancing color and intensity of a light emitted from a light source comprising

forming a light source of a solid wavelength conversion element on a solid state light source, and

adding portions of a solid wavelength conversion material to said solid wavelength conversion element.

9. The additive method of balancing color and intensity of a light emitted from a light source of claim 8 wherein said solid state light source is a light emitting diode.

10. The additive method of balancing color and intensity of a light emitted from a light source of claim 8 wherein said adding portions of said solid wavelength conversion element forms at least one bump on said solid wavelength conversion element.

11. The additive method of balancing color and intensity of a light emitted from a light source of claim 8 wherein said removing portions of said solid wavelength conversion element forms at least one ridge on said solid wavelength conversion element.

12. The additive method of balancing color and intensity of a light emitted from a light source of claim 8 wherein said portions of a solid wavelength conversion material are the same material as said solid wavelength conversion element.

13. The additive method of balancing color and intensity of a light emitted from a light source of claim 8 wherein said portions of a solid wavelength conversion material are a different material as said solid wavelength conversion element.

14. The additive method of balancing color and intensity of a light emitted from a light source of claim 8 wherein said adding portions of a solid wavelength conversion material to said solid wavelength conversion element is by means including, but not limited to, thick film processing, glazing, sol-gel, melt bonding, spraying, evaporation, spin coating, and painting onto at least a portion of said solid wavelength conversion element.

15. The additive method of balancing color and intensity of a light emitted from a light source of claim 8 wherein said solid wavelength conversion element is a luminescent element.