Pacific Light & Hologram, Inc.

California Institute of Technology

Joshua D Wiensch

Tina Qin

Jonathan Seamus Blackley

Kamran Qaderi

Sylvain Marcel Colin

Asher Zelig Sefami

Stephen John Hart

Mark Anthony Loya

Robin James Green

Watson Brent Boyett

Jesus Manuel Caridad Ramirez

Benjamin Francis Neil

DeaGyu Kim

Margaret H Hsu

Sameer Sudhir Walavalkar

Jayakrishna Sashidharan

Jeff D Smith

Robert Alan Hess

Richard Bahr

Christoph Von Jutrzenka

Kelly Swan Macneill

Isaac Serrano Guasch

Robert David Srinivasiah

Mark Anthony Sararu

Rajay Kumar

Daniel Dereck Williamson

Theodor Agapie

Madalyn Radlauer

Aya K Buckley

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a system includes a display and a controller coupled to the display. The controller is configured to: obtain primitive data of a plurality of primitives corresponding to an object, the primitive data indicating an overlap between adjacent primitives of the plurality of primitives; generate control signals for a plurality of display elements of a display using the primitive data of the plurality of primitives; and transmit the control signals to the display to modulate the plurality of display elements of the display based on the control signals.

Holographically displaying three-dimensional objects

Methods, apparatus, devices, subsystems, and systems related to irregular devices and methods for designing and fabricating the irregular devices are provided. In one aspect, a device includes: a backplane comprising a plurality of circuits and a plurality of elements arranged on the backplane. Each of the plurality of elements includes a metallic electrode. Each of the metallic electrodes is coupled to a respective circuit of the plurality of circuits in the backplane through a corresponding via of a plurality of vias, and a position relationship between the metallic electrode and the corresponding via satisfies one or more criteria.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a method includes: obtaining primitive data of a plurality of primitives corresponding to an object, and adjusting the primitive data of the plurality of primitives to generate a gap between adjacent primitives of the plurality of primitives.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a system includes: a display having a plurality of display elements and a driving device coupled to the driving device and configured to: obtain a hologram for the display, wherein the hologram comprises, for each display element of the plurality of display elements, a respective sum of electromagnetic (EM) field contributions of a plurality of primitives corresponding to at least one object to the display element; and generate, for each display element of the plurality of display elements, a respective modulation control signal based on the respective sum of EM field contributions of the plurality of primitives to the display element.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, an optical device includes: an optical guiding device configured to guide light to propagate along a first direction within the optical guiding device, the light including multiple colors of light; an in-coupling diffractive structure configured to diffract the light to propagate in the optical guiding device; and a plurality of out-coupling diffractive structures arranged downstream of the in-coupling diffractive structure along the first direction and configured to diffract at least part of the light out of the optical guiding device along a second direction different from the first direction. The optical device can be configured for at least one of: color crosstalk suppression among the multiple colors of light, display zero order light suppression, dispersion compensation, or ambient light blocking.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a device includes a plurality of elements arranged in rows and columns and a controller coupled to the plurality of elements, the controller comprising a plurality of driving circuits and a plurality of row scanners. Each of the plurality of elements is coupled to a respective driving circuit of the plurality of driving circuits. The plurality of row scanners include a row scanner having a series of selectors that are arranged in a column between two adjacent columns of elements, each selector of the series of selectors being configured to select a corresponding row of elements through corresponding driving circuits coupled to the corresponding row of elements.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. A system includes a display and a controller. The display includes: a backplane having a plurality of circuits and a plurality of display elements arranged on the backplane. The plurality of display elements form an irregular pattern. Each of the plurality of display elements is coupled to a respective circuit of the plurality of circuits. The controller is coupled to the display and configured to transmit at least one control signal to at least one display element of the display for modulating at least one property of the at least one display element.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a device includes: an optical guiding device configured to guide light to propagate along a first direction within the optical guiding device, an in-coupling diffractive structure configured to diffract the light to propagate in the optical guiding device, and one or more out-coupling diffractive structures arranged downstream the in-coupling diffractive structure along the first direction and configured to diffract at least part of the light out of the optical guiding device along a second, different direction. The in-coupling diffractive structure is configured to cause a first optical dispersion for the light, and at least one out-coupling diffractive structure is configured to cause a second optical dispersion for the light. The first and second optical dispersions are compensated, such that light diffracted out of the optical guiding device has no or little optical dispersion.

Holographically displaying three-dimensional objects with optical devices having in-coupling and out-coupling diffractive structures

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a device includes at least one processor and at least one memory coupled to the at least one processor and having instructions executable by the at least one processor to perform operations including: obtaining primitive data of a plurality of primitives corresponding to at least one object based on information of the plurality of primitives, the information of the plurality of primitives comprising respective primitive identifiers of the plurality of primitives; for each primitive of the plurality of primitives, determining an electromagnetic (EM) field contribution to each of a plurality of display elements of a display based on primitive data of the primitive; and for each of the plurality of display elements of the display, generating a sum of the EM field contributions of the plurality of primitives to the display element.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a computer-implemented method of manipulating data of a plurality of primitives corresponding to at least one object includes: for each of a plurality of vertices of the plurality of primitives, associating a respective vertex identifier of the vertex with respective vertex data of the vertex, and storing the association between the respective vertex identifier and the respective vertex data of the vertex in a memory; and for each of the plurality of primitives, associating a respective primitive identifier of the primitive with one or more respective vertex identifiers of one or more vertices of the primitive in the memory, and storing an association between the respective primitive identifier and the one or more respective vertex identifiers for the primitive in the memory.

Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, an optical device includes: an optical guiding device configured to guide light to propagate along a first direction within the optical guiding device; an in-coupling diffractive structure configured to diffract the light to propagate in the optical guiding device; and out-coupling diffractive structures configured to diffract at least part of the light out of the optical guiding device along a second direction different from the first direction. The out-coupling diffractive structures are configured to have gradually increased diffraction efficiencies for the light along the first direction away from the in-coupling diffractive structure. A first diffraction efficiency of the in-coupling diffractive structure is no smaller than a first threshold, and a second diffraction efficiency of each out-coupling diffractive structure is no greater than a second threshold that is no greater than the first threshold.

A device includes a backplane and a plurality of elements arranged on the backplane. The plurality of elements form an irregular pattern. The backplane includes a plurality of circuits. The plurality of elements are coupled to the plurality of circuits by conductive vias that are regularly spaced.

Irregular devices

Methods, apparatus, devices, and systems for three-dimensional (3D) displaying objects are provided. In one aspect, a method includes obtaining data including respective primitive data for primitives corresponding to an object, determining an electromagnetic (EM) field contribution to each element of a display for each of the primitives by calculating an EM field propagation from the primitive to the element, generating a sum of the EM field contributions from the primitives for each of the elements, transmitting to each of the elements a respective control signal for modulating at least one property of the element based on the sum of the EM field contributions, and transmitting a timing control signal to an illuminator to activate the illuminator to illuminate light on the display, such that the light is caused by the modulated elements of the display to form a volumetric light field corresponding to the object.

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Pasadena, CA, United States of America

Joshua D Wiensch