Color mixing light source and color control data system

• US 20080219303A1
• Filed: 03/02/2007
• Published: 09/11/2008
• Est. Priority Date: 03/02/2007
• Status: Abandoned Application

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Chen, Gang, Schabel, Michael J., Rapaport, Ronen
• Application Number:
  US11/713,483
• Publication Number:
  US 20080219303A1
• Time in Patent Office: Days
• US Class Current: 372/23
• CPC Class Codes: H04N 9/3129 scanning a light beam on the display screen scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161

Abstract

Apparatus including a color mixing light source having a first laser configured to lase at one or a plurality of light emission wavelengths of 459 nanometers or less and a second laser configured to lase at one or a plurality of light emission wavelengths of 470 nanometers or more; and a controller having a color control data input and a color control data output configured to cause the color mixing light source to generate a perceptual mixture of light having a perceptual color, the perceptual mixture including light emissions from the first and second light sources. System configured to map first color control data to second color control data. Method of forming a perceptual mixture of light having a perceptual color. Method of converting color control data.

Claims

1. An apparatus, comprising:

a color mixing light source having a first laser configured to lase at one or a plurality of light emission wavelengths of 459 nanometers or less and a second laser configured to lase at one or a plurality of light emission wavelengths of 470 nanometers or more; and

a controller having a color control data input, and a color control data output configured to cause the color mixing light source to generate a perceptual mixture of light having a perceptual color, the perceptual mixture including light emissions from the first and second light sources.

2. The apparatus of claim 1, where the first laser is configured to lase at one or a plurality of light emission wavelengths within a range of between 405 nanometers to 459 nanometers.

3. The apparatus of claim 1, where the first laser is configured to lase at one or a plurality of light emission wavelengths within a range of between 420 nanometers to 459 nanometers.

4. The apparatus of claim 1, where the first laser is configured to lase at one or a plurality of light emission wavelengths within a range of between 420 nanometers to 445 nanometers.

5. The apparatus of claim 1, where the first laser includes a Group III-nitride laser.

6. The apparatus of claim 1, where the first laser includes a wavelength-converted infrared laser.

7. The apparatus of claim 1, where the color mixing light source includes a third laser configured to lase at one or a plurality of light emission wavelengths of 470 nanometers or more and each of the first, second and third lasers is configured to lase at different wavelengths, the color mixing light source forming a perceptual mixture of light having a perceptual color, the perceptual mixture including light emissions from the first, second and third light sources.

8. The apparatus of claim 1, where the controller is configured to receive color control data conforming to a first perceptual color space at the color control data input and to transmit color control data conforming to a second perceptual color space at the color control data output.

9. The apparatus of claim 8, where the first perceptual color space is a conventional perceptual color space identified by a designation including a member selected from the group consisting of:

National Television System Committee (“

NTSC”

), Digital Cinema Initiatives (“

DCI”

), and International Electro-technical Commission (“

IEC”

).

10. A method, comprising:

outputting light from a first light source emitting light at one or a plurality of first light emission wavelengths of 459 nanometers or less, and outputting light from a second light source emitting light at one or a plurality of second light emission wavelengths of 470 nanometers or more; and

forming a perceptual mixture of light having a perceptual color, the perceptual mixture including light emissions from the first and second light sources.

11. The method of claim 10, including outputting light from a third light source emitting light at one or a plurality of third light emission wavelengths of 470 nanometers or more where a third wavelength is different than a second wavelength, and forming a perceptual mixture of light having a perceptual color, the perceptual mixture including light emissions from the first, second and third light sources.

12. The method of claim 10, including receiving color control data conforming to a first perceptual color space, converting the received color control data into color control data conforming to a second perceptual color space, and utilizing the color control data conforming to the second perceptual color space in controlling the light emissions from the first and second light sources.

13. The method of claim 12, where receiving color control data includes receiving color control data conforming to a conventional perceptual color space identified by a designation including a member selected from the group consisting of:

National Television System Committee (“

NTSC”

), Digital Cinema Initiatives (“

DCI”

), and International Electro-technical Commission (“

IEC”

).

14. A system, including:

first color control data conforming to a first perceptual color space;

second color control data conforming to a second perceptual color space; and

a digital data processor configured to map the first color control data to the second color control data.

15. The system of claim 14, where the digital data processor is configured to subtract the second perceptual color space from the first perceptual color space, and to map any remaining part of the first perceptual color space into the second perceptual color space.

16. The system of claim 14, where the digital data processor is configured to compress the first perceptual color space into the second perceptual color space.

17. A method, including:

receiving color control data conforming to a first perceptual color space, and identifying the first perceptual color space;

accessing color control data defining a second perceptual color space;

mapping the first perceptual color space into the second perceptual color space; and

converting the received color control data conforming to the first perceptual color space into color control data conforming to the second perceptual color space.

18. The method of claim 17, including subtracting the second perceptual color space from the first perceptual color space, and mapping any remaining part of the first perceptual color space into the second perceptual color space.

19. The method of claim 17, including compressing the first perceptual color space into the second perceptual color space.

20. The method of claim 17, where accessing color control data defining a second perceptual color space includes accessing a second perceptual color space generated by mapping perceptual colors of perceptual mixtures of light emissions from a color mixing light source having a first laser configured to lase at one or a plurality of light emission wavelengths of 459 nanometers or less and a second laser configured to lase at one or a plurality of light emission wavelengths of 470 nanometers or more.