Apparatus and methods for selecting light emitters

1. A method of grouping a plurality of light emitters, comprising:

generating emitter raw spectral power distribution data for each of the plurality of light emitters;

estimating front of screen (FOS) spectral power distribution data for each of the plurality of light emitters from an application specific transmission characteristic corresponding to a filtering property of a transmissive component and the emitter raw spectral power data for each of the plurality of light emitters;

selecting a first portion of the plurality of light emitters using a first region of a multiple axis color space that includes International Commission on illumination (CIE) 1976 and that corresponds to a first FOS spectral power distribution, the region proximate a predefined point on the multiple axis color space and comprising a major axis including a first length and a minor axis including a second length that is less than the first length;

selecting a plurality of other portions of the plurality of light emitters using a plurality of other regions and having a substantially similar size and shape as the first region, at least one of the plurality of other regions being adjacent the first region, and

wherein the major axis defines an angle of less than 45 degrees from a vertical axis of the multiple axis color space.

2. The method of claim 1 , wherein the first region and the plurality of other regions correspond to a portion of the multiple axis color space in which chromaticity color coordinate u′ is in a range of about 0.13 to about 030 and chromaticity coordinate v is in a range of about 036 to about 0.55.

3. The method of claim 1 , wherein the region comprises hexagonal geometry.

4. The method of claim 1 , wherein a ratio of the first length to the second length is in a range from about 1.3 to about 2.3.

5. The method of claim 1 , wherein a ratio of the first length to the second length comprises approximately 2.1.

6. The method of claim 1 , wherein the major axis is oriented substantially 10 degrees clockwise from the vertical axis of the multiple axis color space.

7. The method of claim 1 , wherein selecting the first portion of the plurality of light emitters comprises selecting the portion of the plurality of light emitters as a function of an application specific transmission characteristic.

8. The method of claim 7 , wherein the application specific transmission characteristic includes a transmission characteristic of a display panel.

9. The method of claim 1 , wherein the plurality of light emitters comprise solid-state light emitters, incandescent lights and/or cold-cathode fluorescent lights.

10. A computer program product for grouping a plurality of light emitters, the computer program product comprising a non-transitory computer usable storage medium having computer readable program code embodied in the medium, the computer readable program code configured to carry out the method of claim 1 .

11. A device, comprising:

a first portion of a plurality of light emitters, the first portion of the plurality of light emitters comprising a spectral power distribution that corresponds to a first region of a multiple axis color space that includes International Commission on Illumination (CIE) 1976 and that is configured to represent each of a plurality of colors, the region proximate a predefined point on the multiple axis color space, the region comprising a major axis including a first length and a minor axis including a second length that is less than the first length,

wherein a plurality of other portions of the plurality of light emitters comprise spectral power distributions corresponding to respective ones of a plurality of other regions of the multiple axis color space, and

wherein the spectral power distributions correspond to a filtering property of a transmissive component.

12. The device of claim 11 ,

wherein each of the plurality of other regions comprises a substantially similar geometry and orientation as the first region, and

wherein the major axis defines an angle of less than 45 degrees from a vertical axis of the multiple axis color space.

13. The device of claim 11 ,

wherein the major axis is oriented at an angle that is substantially 10 degrees from a vertical axis of the multiple axis color space, and

wherein the first region and the plurality of other regions correspond to a portion of the multiple axis color space in which chromaticity color coordinate u′ is in a range of about 0.13 to about 0.30 and chromaticity coordinate V is in a range of about 0.36 to about 0.55.

14. The device of claim 11 , wherein the first region comprises an elliptical, rectangular and/or hexagonal geometry.

15. The device of claim 11 , wherein the transmissive component comprises a display panel.

16. The device of claim 13 , wherein the plurality of light emitters comprise solid-state light emitters, incandescent lights and/or cold-cathode fluorescent lights.

17. Apparatus for grouping a plurality of light emitters, comprising:

a chromaticity module that is configured to estimate the spectral data corresponding to each of the plurality of light emitters;

a color space region definition module that is configured to define boundaries of a color space region of a multiple axis color space that includes International Commission on Illumination (CIE) 1976 and that corresponds to a spectral power distribution, the color space region corresponding to a predefined point on the multiple axis color space and including a major axis including a first length and a minor axis including a second length that is less than the first length; and

a selection module that is configured to select at least one portion of a plurality of portions of the plurality of light emitters that corresponds to a respective one of a plurality of adjacent color space regions of the multiple axis color space,

wherein the plurality of portions of the plurality of light emitters comprise spectral power distributions that correspond to respective ones of the plurality of adjacent color space regions of the multiple axis color space,

wherein each of the plurality of regions comprises a substantially similar shape and orientation as the color space region in the multiple axis color space, and

wherein the major axis defines an angle of less than 45 degrees from a vertical axis of the multiple axis color space.

18. The apparatus of claim 17 , wherein the major axis is oriented substantially 10 degrees clockwise from a vertical axis of the multiple axis color space.

19. The apparatus of claim 17 , further comprising means for estimating front of screen (FOS) spectral data corresponding to each of the plurality of light emitters using the spectral data corresponding to each of the plurality of light emitters and a filtering property of a transmissive component, wherein the selection module is configured to select the portion of the plurality of light emitters that correspond to the color space region via the FOS spectral data of each of the plurality of light emitters.

20. A method of grouping a plurality of light emitters, comprising:

generating emitter raw spectral power distribution data for each of the plurality of light emitters;

estimating front of screen (FOS) spectral power distribution data for each of the plurality of light emitters from an application specific transmission characteristic corresponding to a filtering property of a transmissive component and the emitter raw spectral power data for each of the plurality of light emitters; and

grouping each of the plurality of light emitters into one of a plurality of regions of a multiple axis color space that correspond to the FOS spectral power distribution data of each of the plurality of light emitters, the region comprising a major axis that defines an angle of less than 45 degrees from a vertical axis of the multiple axis color space and including a first length and a minor axis including a second length that is less than the first length, the major axis oriented substantially different from the vertical axis of the multiple axis color space.

21. The method of claim 20 , wherein the major axis is oriented substantially 10 degrees clockwise from the vertical axis of the multiple axis color space.

22. The method of claim 20 , wherein a ratio of the first length to the second length is in a range from about 1.3 to about 2.3.

23. The method of claim 20 , wherein a ratio of the first length to the second length comprises approximately 2.1.