Holographic volumetric displays

Patent metadata

Field	Value
Publication number	US-12416897-B2
Application number	US-202318313214-A
Country	US
Kind code	B2
Filing date	May 5, 2023
Priority date	Sep 22, 2022
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

One embodiment of a display system includes one or more light sources, one or more spatial light modulators, and a plurality of scatterers. One embodiment of a method for displaying content includes computing at least one of a phase or an amplitude modulation associated with two-dimensional (2D) or three-dimensional (3D) content, and causing one or more spatial light modulators to modulate light based on the at least one of a phase or an amplitude modulation to generate modulated light, where the modulated light is scattered by a plurality of scatterers.

First claim

What is claimed is:

1. A display system comprising:
one or more light sources;
one or more spatial light modulators that modulate light emitted by the one or more light sources in accordance with at least one of a phase or an amplitude modulation to generate modulated light, wherein the at least one of a phase or an amplitude modulation is computed based on two-dimensional (2D) or three-dimensional (3D) content to be displayed; and
a plurality of scatterers, wherein the one or more spatial light modulators direct the modulated light towards a subset of scatterers included in the plurality of scatterers, and wherein the modulated light is scattered by the subset of scatterers to display the 2D or 3D content.

2. The display system of claim 1 , wherein the plurality of scatterers are disposed within a container.

3. The display system of claim 2 , wherein the plurality of scatterers are disposed along a plurality of planes within the container.

4. The display system of claim 2 , wherein the container is cylindrical.

5. The display system of claim 2 , wherein the container is configurable to at least one of extend from or retract within a table.

6. The display system of claim 1 , wherein each scatterer included in the plurality of scatterers is associated with one or more volumetric pixels.

7. The display system of claim 1 , further comprising a waveguide configured to guide light emitted by the one or more light sources towards the plurality of scatterers.

8. The display system of claim 1 , further comprising at least one of a lens, a polarizer, or a beam splitter disposed in a light path between the one or more light sources and the plurality of scatterers.

9. The display system of claim 1 , further comprising:
one or more memories storing instructions; and
one or more processors that are coupled to the one or more memories and, when executing the instructions, are configured to:
compute the at least one of a phase or an amplitude modulation based on the three-dimensional (3D) content or two-dimensional (2D) content to be displayed, and
cause the one or more spatial light modulators to modulate light emitted by the one or more light sources in accordance with the at least one of a phase or an amplitude modulation.

10. The display system of claim 9 , wherein the at least one of a phase or an amplitude modulation is computed via a trained machine learning model.

11. A computer-implemented method for displaying content, the method comprising:
computing at least one of a phase or an amplitude modulation based on two-dimensional (2D) or three-dimensional (3D) content to be displayed; and
causing one or more spatial light modulators to modulate light in accordance with the at least one of a phase or an amplitude modulation to generate modulated light that is directed towards a subset of scatterers included in a plurality of scatterers, wherein the modulated light is scattered by the subset of scatterers to display the 2D or 3D content.

12. The computer-implemented method of claim 11 , wherein the at least one of a phase or an amplitude modulation is computed via a trained machine learning model.

13. The computer-implemented method of claim 12 , further comprising performing one or more operations to train a machine learning model based on light that is scattered by the plurality of scatterers and captured by one or more cameras.

14. The computer-implemented method of claim 12 , wherein the plurality of scatterers are disposed within a container, and the method further comprises performing one or more operations to train a machine learning model based on one or more images that capture information at different depths within the container.

15. The computer-implemented method of claim 11 , wherein computing the at least one of a phase or an amplitude modulation comprises performing at least one of one or more phase optimization operations or one or more amplitude optimization operations based on a trained machine learning model.

16. The computer-implemented method of claim 11 , wherein computing the at least one of a phase or an amplitude modulation comprises performing one or more machine learning operations.

17. The computer-implemented method of claim 11 , wherein computing the at least one of a phase or an amplitude modulation comprises performing one or more camera-in-the-loop optimization operations.

18. The computer-implemented method of claim 11 , wherein the least one of a phase or an amplitude modulation is associated with a portion of each spatial light modulator included in the one or more spatial light modulators.

19. The computer-implemented method of claim 11 , further comprising causing a container in which the plurality of scatterers are disposed to at least one of extend from or extract within a table.

20. One or more non-transitory computer-readable media storing instructions that, when executed by at least one processor, cause the at least one processor to perform the steps of:
computing at least one of a phase or an amplitude modulation based on two-dimensional (2D) or three-dimensional (3D) content to be displayed; and
causing one or more spatial light modulators to modulate light in accordance with the at least one of a phase or an amplitude modulation to generate modulated light that is directed towards a subset of scatterers included in a plurality of scatterers, wherein the modulated light is scattered by the subset of scatterers to display the 2D or 3D content.

Assignees

• Nvidia Corp

Inventors

• Kim Jonghyun
• Lopes Ward
• Luebke David

Classifications

• G03H2001/0212

  Light sources or light beam properties (G03H1/06, G03H1/24 take precedence; corresponding details, see subgroups of G03H2222/00) · CPC title

• G03H2210/30

  3D object · CPC title

• G03H2223/50

  Particular location or purpose of optical element · CPC title

• G03H2210/20

  2D object · CPC title

• G03H2001/0088

  for video-holography, i.e. integrating hologram acquisition, transmission and display · CPC title