Laser based display method and system

• US 9,013,638 B2
• Filed: 03/06/2014
• Issued: 04/21/2015
• Est. Priority Date: 05/29/2009
• Status: Active Grant

• Current Assignee: Kyocera SLD Laser Incorporated (Kyocera Corporation)
• Original Assignee: Soraa Laser Diode, Inc. (Kyocera Corporation)
• Inventors: Raring, James W., Rudy, Paul
• Primary Examiner(s): Harold, Jefferey
• Assistant Examiner(s): HAIEM, SEAN N
• Application Number:
  US14/199,672
• Publication Number:
  US 20140226079A1
• Time in Patent Office: 411 Days
• Field of Search: None
• US Class Current: 348/744
• CPC Class Codes: G03B 21/2033 LED or laser light sources
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 2005/745 Control circuits therefor
• CPC Class Codes: H04N 2005/7483 for colour television
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor
• CPC Class Codes: H04N 5/7441 the modulator being an array of liquid crystal cells
• CPC Class Codes: H04N 5/7475 Constructional details of television projection apparatus
• CPC Class Codes: H04N 9/31 Projection devices for colour picture display , e.g. using electronic spatial light modulators [ESLM]
• 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
• CPC Class Codes: H04N 9/3132 using one-dimensional electronic spatial light modulators

Abstract

The present invention is directed to display technologies. More specifically, various embodiments of the present invention provide projection display systems where one or more laser diodes are used as a light source for illustrating images. In one set of embodiments, the present invention provides projector systems that utilize blue and/or green laser fabricated using gallium nitride containing material. In another set of embodiments, the present invention provides projection systems having digital lighting processing engines illuminated by blue and/or green laser devices. In one embodiment, the present invention provides a 3D display system. There are other embodiments as well.

Claims

1. A method for operating a projection apparatus comprising:

providing the projection apparatus comprising;

a housing having an aperture;

an input interface for receiving one or more frames of images;

a laser source including an edge emitting blue laser diode and a wavelength modifying module, the blue laser diode comprising a gallium and nitrogen containing material, the wavelength modifying module comprising phosphor material, the laser exciting the phosphor material to form a colored emission source;

a digital light processing chip comprising a digital mirror device, the digital mirror device including a plurality of mirrors, each of the mirrors corresponding to one or more pixels of the one or more frames of images;

means for directing light from the blue laser diode and the colored emission sources to the digital mirror device; and

a power source electrically coupled to the laser source and the digital light processing chip; and

projecting an image using the projection apparatus.

2. The apparatus of claim 1 wherein the blue laser diode is operable in a 430-480 nm wavelength range and characterized by a nonpolar m-plane orientation.

3. The apparatus of claim 1 wherein the blue laser diode is operable in a 430-480 nm wavelength range and characterized by a semipolar {20-21} orientation.

4. The apparatus of claim 1 wherein the phosphor material comprises a red emitting phosphor material and a green emitting phosphor material.

5. The apparatus of claim 1 wherein the phosphor material comprises a red emitting phosphor material, a green emitting phosphor material, and a blue emitting phosphor material.

6. The apparatus of claim 1 further comprising more than one digital light processing chips.

7. A method for operating a projection apparatus comprising:

providing the projection apparatus comprising;

a housing having an aperture;

an input interface for receiving one or more frames of images;

a laser source including a gallium and nitrogen containing material, an edge emitting laser diode, and a wavelength modifying module, the wavelength modifying module comprising phosphor material, a laser exciting the phosphor material to form a colored emission source;

a digital light processing chip comprising a digital mirror device, the digital mirror device including a plurality of mirrors, each of the mirrors corresponding to one or more pixels of the one or more frames of images;

means for directing light from the colored emission source to the digital mirror device; and

a power source electrically coupled to the laser source and the digital light processing chip; and

projecting an image using the projection apparatus.

8. The apparatus of claim 7 wherein the laser diode is operable in a 430-480 nm wavelength range and characterized by a nonpolar m-plane orientation.

9. The apparatus of claim 7 wherein the laser diode is operable in a 430-480 nm wavelength range and characterized by a semipolar {20-21} orientation.

10. The apparatus of claim 7 wherein the phosphor material comprises a red emitting phosphor material and a green emitting phosphor material.

11. The apparatus of claim 7 wherein the phosphor material comprises a red emitting phosphor material, a green emitting phosphor material, and a blue emitting phosphor material.

12. The apparatus of claim 7 further comprising more than one digital light processing chips.

13. A method for operating a projection apparatus comprising:

providing the projection apparatus comprising;

a housing having an aperture;

an input interface for receiving one or more frames of images;

a light source, the light source including an edge emitting blue laser diode, the blue laser diode being characterized by a semi-polar or non-polar orientation and manufactured from gallium containing material;

a digital light processing chip comprising a digital mirror device, the digital mirror device including a plurality of mirrors, each of the mirrors corresponding to one or more pixels of the one or more frames of images;

a color wheel comprising a plurality of wavelength-modifying components, the plurality of wavelength-modifying components including a first component, the first component including phosphor material and corresponding to a predetermined time sequence; and

a power source electrically coupled to the light source and the digital light processing chip; and

projecting an image using the projection apparatus.

14. The apparatus of claim 13 wherein the light source further comprises phosphor material.

15. The apparatus of claim 13 wherein the light source further includes one or more LEDs.

16. The apparatus of claim 13 wherein the light source comprises a red LED.

17. The apparatus of claim 13 wherein the light source comprises a yellow emitting laser diode.

18. The apparatus of claim 13 wherein the plurality of wavelength-modifying components includes at least a first phosphor and a second phosphor;

the first phosphor material is comprised of a red emitting phosphor material and the second phosphor is comprised of a green emitting phosphor material.

19. The apparatus of claim 13 wherein the plurality of wavelength-modifying components includes at least a first phosphor, a second phosphor, and a third phosphor;

the first phosphor material is comprised of a red emitting phosphor material, the second phosphor is comprised of a green emitting phosphor material, and the third phosphor is comprised of a blue emitting phosphor.

20. A method for operating a projection apparatus comprising:

providing the projection apparatus comprising;

a housing having an aperture;

an input interface for receiving one or more frames of images;

a light source, the light source including an edge emitting violet laser diode, the violet laser diode being characterized by a semi-polar or non-polar orientation and manufactured from gallium containing material;

a digital light processing chip comprising a digital mirror device, the digital mirror device including a plurality of mirrors, each of the mirrors corresponding to one or more pixels of the one or more frames of images;

a color wheel comprising a plurality of wavelength-modifying components, the plurality of wavelength-modifying components including a first component, the first component including phosphor material and corresponding to a predetermined time sequence; and

a power source electrically coupled to the light source and the digital light processing chip; and

projecting an image using the projection apparatus.

21. The apparatus of claim 20 wherein the violet laser diode is operable in an ultra-violet wavelength range.