MULTI-COLORED ILLUMINATOR FOR DISPLAYS

• US 20080007967A1
• Filed: 05/25/2007
• Published: 01/10/2008
• Est. Priority Date: 05/25/2006
• Status: Active Grant

• Current Assignee: I2IC Corporation
• Original Assignee: I2IC Corporation
• Inventors: Kanade, Udayan, Ganapathy, Balaji
• Granted Patent: US 7,810,980 B2
• Time in Patent Office: Days
• US Class Current: 362/613
• CPC Class Codes: F21V 9/00 Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters coloured shades F21V1/00; elements characterised by cooling arrangements F21V29/502
• CPC Class Codes: G02B 6/0041 provided in the bulk of the light guide
• CPC Class Codes: G02B 6/0061 to provide homogeneous light output intensity
• CPC Class Codes: G09F 13/22 electroluminescent electroluminescent light sources per se H05B33/00

Abstract

An apparatus for providing a multicolored illuminator for displays is disclosed. In one embodiment, the apparatus comprises a first sheet comprising a plurality of columnar illuminators stacked side by side, and a plurality of colored light sources placed along an edge of the first sheet. The plurality of columnar illuminators diffuse light generated by the plurality of colored light sources. The light emanates in a predetermined pattern.

Claims

1. An apparatus comprising:

a first sheet comprising a plurality of columnar illuminators stacked side by side; and

a plurality of colored light sources placed along an edge of the first sheet;

wherein the plurality of columnar illuminators diffuse light generated by the plurality of colored light sources such that the light emanates in a predetermined pattern.

2. The apparatus of claim 1, further comprising reflectors that focus the light onto the edge of the first sheet.

3. The apparatus of claim 1, wherein the plurality of columnar illuminators comprises a first column of a transparent material.

4. The apparatus of claim 3, wherein the plurality of columnar illuminators comprises a second column of a second transparent material and is adjacent to the first column.

5. The apparatus of claim 3, wherein one or more faces of the first column are reflective.

6. The apparatus of claim 3, wherein the first column includes a distribution of light diffusing particles.

7. The apparatus of claim 6, wherein the distribution of light diffusing particles is uniform along the first column.

8. The apparatus of claim 6, wherein the distribution of light diffusing particles is varied along the first column.

9. The apparatus of claim 6, wherein the first column produces uniform light along its length.

10. The apparatus of claim 6, wherein the light diffusing particles include one or more of a metallic powder, metallic pigment, organic powder, and organic pigment, wherein the light diffusing particles reflect incident light.

11. The apparatus of claim 6, wherein the light diffusing particles include one or more of a transparent particle, and a transparent bubble, wherein the light diffusing particles disperse light by refraction.

12. The apparatus of claim 1, wherein the plurality of colored light sources include one of a linear light source, and a tubular light source.

13. The apparatus of claim 1, further comprising an additional colored light source placed along a second edge of the first sheet.

14. The apparatus of claim 4, wherein the first column has a higher refractive index than the second column.

15. The apparatus of claim 2, wherein each colored light source of the plurality of colored light sources is placed at a focus point of a respective reflector of the reflectors.

16. The apparatus of claim 2, wherein each colored light source of the plurality of colored light sources is placed near a focus point of one reflector.

17. The apparatus of claim 15, further comprising mirrors that reflect light from the plurality of colored light sources into corresponding first columns of the plurality of columnar illuminators.

18. The apparatus of claim 17, further comprising mirrors reflecting light from the plurality of colored light sources back into a corresponding reflector of the reflectors, situated alternately with the mirrors reflecting light into the plurality of columnar illuminators.

19. The apparatus of claim 1, wherein each colored light source of the plurality of colored light sources includes a distribution of light diffusing particles.

20. The apparatus of claim 17, wherein each colored light source of the plurality of colored light sources includes a distribution of light diffusing particles close to the mirrors.

21. The apparatus of claim 19, wherein the light diffusing particles are of a shape conducive for a directional emanation of light.