Wearable laser based display method and system

Patent metadata

Field	Value
Publication number	US-12066632-B2
Application number	US-202318116735-A
Country	US
Kind code	B2
Filing date	Mar 2, 2023
Priority date	Oct 11, 2013
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

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

First claim

What is claimed is:

1. A wearable display system, comprising:
a package member having a common carrier, the package member comprising:
a blue in-plane laser diode configured to emit light having a peak operation wavelength of about 430 nm to 480 nm and a spectral width of 2 nm or less, the blue in-plane laser diode comprising a first gallium and nitrogen containing material, the first gallium and nitrogen containing material comprising a first quantum well region having one or more quantum wells, the blue in-plane laser diode emitting light in a first direction;
a green in-plane laser diode configured to emit light having a peak operation wavelength of about 490 nm to 540 nm and a spectral width of 2 nm or less, the green in-plane laser diode comprising a second gallium and nitrogen containing material, the second gallium and nitrogen containing material comprising a second quantum well region having one or more quantum wells, the green in-plane laser diode emitting light in a second direction;
a red in-plane laser diode configured to emit light having a spectral width of 2 nm or less, wherein at least one of the blue in-plane laser diode, the green in-plane laser diode, or the red in-plane laser diode has a laser cavity with a length of 150 um or less, the red in-plane laser diode emitting light in a third direction;
wherein each of the blue, red, and green in-plane laser diodes are ridge laser diodes;
wherein each of the first, second, and third direction of emitted light is configured to be directed along a common pathway;
one or more optical elements configured to collimate, focus, shape, and/or guide the light emitted from the blue in-plane laser diode, the light emitted from the green in-plane laser diode, and the light emitted from the red in-plane laser diode directed along the common pathway;
a waveguide configured to guide a combined beam, the waveguide including a diffractive or holographic optic; and
an electrical driver module coupled to each of the blue in-plane laser diode, the green in-plane laser diode, and the red in-plane laser diode; whereupon the electrical driver module is configured to individually supply a unique signal of electrical power to each of the blue in-plane laser diode, the green in-plane laser diode, and the red in-plane laser diode;

a micro-display having a liquid crystal on silicon (LCOS) device or a microelectromechanical (MEMS) scanning mirror arranged to receive the combined beam from the waveguide and project the combined beam to form an image visible to a human user of the wearable display system.

2. The system of claim 1 wherein the waveguide is a transparent waveguide that includes at least one of a diffraction optic, a holographic optic, a polarized optic, or a reflective optic.

3. The system of claim 1 wherein the one or more optical elements include at least one of a beam combiner or a waveguide.

4. The system of claim 1 wherein the package member further comprises a first collimating lens configured to collimate the light emitted from the blue in-plane laser diode, a second collimating lens configured to collimate the light emitted from the green in-plane laser diode, and a third collimating lens configured to collimate the light emitted from the red in-plane laser diode.

5. The system of claim 1 wherein the blue in-plane laser diode, the green in-plane laser diode, and the red in-plane laser diode are arranged on a same surface of the common carrier.

6. A wearable display system, comprising:
a package member having a common carrier, the package member comprising:
a blue laser diode arranged on a surface of the common carrier and configured to emit light having a peak operation wavelength of about 430 nm to 480 nm and a spectral width of 5 nm or less, the blue laser diode comprising a first gallium and nitrogen containing material, the first gallium and nitrogen containing material comprising a first quantum well region having one or more quantum wells;
a green laser diode arranged on the surface of the common carrier and configured to emit light having a peak operation wavelength of about 490 nm to 540 nm and a spectral width of 5 nm or less, the green laser diode comprising a second gallium and nitrogen containing material, the second gallium and nitrogen containing material comprising a second quantum well region having one or more quantum wells;
a red laser diode arranged on the surface of the common carrier and configured to emit light having a spectral width of 5 nm or less;
a first collimating lens configured to collimate the light emitted from the blue laser diode;
a second collimating lens configured to collimate the light emitted from the green laser diode;
a third collimating lens configured to collimate the light emitted from the red laser diode;
a first waveguide coupled to a first laser pathway of the blue laser diode, the first waveguide arranged to receive the light emitted from the blue laser diode and configured to guide the light emitted from the blue laser diode along a first pathway;
a second waveguide coupled to a second laser pathway of the green laser diode, the second waveguide arranged to receive the light emitted from the green laser diode and configured to guide the light emitted from the green laser diode along a second pathway;
a third waveguide coupled to a third laser pathway of the red laser diode, the third waveguide arranged to receive light emitted from the red laser diode and configured to guide the light emitted from the red laser diode along a third pathway;
a waveguide configured to guide the light the light emitted from the blue laser diode, the light emitted from the green laser diode, and the light emitted from the red laser diode along a fourth pathway; and
an electrical driver module coupled to each of the blue laser diode, the green laser diode, and the red laser diode; whereupon the electrical driver module is configured to individually supply a unique signal of electrical power to each of the blue laser diode, the green laser diode, and the red laser diode;

a micro-display having a liquid crystal on silicon (LCOS) device or a microelectromechanical (MEMS) scanning mirror arranged to receive light from the waveguide and project the light to form an image visible to a human user of the wearable display system.

7. The system of claim 6 wherein the waveguide is a transparent waveguide that includes at least one of a diffraction optic, a holographic optic, a polarized optic, or a reflective optic.

8. The system of claim 6 wherein the waveguide is an ultra thin waveguide.

9. The system of claim 6 wherein the first waveguide, the second waveguide, and the third waveguide are oriented so as to be substantially parallel with one another.

10. The system of claim 6 wherein at least one of the blue laser diode, the green laser diode, or the red laser diode is an in-plane laser diode.

11. The system of claim 6 wherein each of the blue laser diode, the green laser diode, and the red laser diode are ridge laser diodes.

12. The system of claim 6 wherein at least portions of the first pathway, the second pathway, and the third pathway are parallel to each other.

13. A wearable display system, comprising:
a package member having a common carrier, the package member comprising:
a blue laser diode arranged on a surface of the common carrier and configured to emit light having a peak operation wavelength of about 430 nm to 480 nm and a spectral width of 5 nm or less, the blue laser diode comprising a first gallium and nitrogen containing material, the first gallium and nitrogen containing material comprising a first quantum well region having one or more

Assignees

• Kyocera Sld Laser Inc

Inventors

• Rudy Paul
• Raring James W
• Goutain Eric
• Huang Hua

Classifications

• H01S5/02325

  Mechanically integrated components on mount members or optical micro-benches · CPC title

• H01S5/32025

  non-polar orientation · CPC title

• H01S5/320275

  semi-polar orientation · CPC title

• H01S5/0014

  Measuring characteristics or properties thereof (measuring techniques per se G01J, G01K, G01N, G01R) · CPC title

• G02B27/4205

  having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant · CPC title