Holographically displaying three-dimensional objects

Patent metadata

Field	Value
Publication number	US-2025061826-A1
Application number	US-202418906076-A
Country	US
Kind code	A1
Filing date	Oct 3, 2024
Priority date	May 12, 2023
Publication date	Feb 20, 2025
Grant date	—

Abstract

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. 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.

First claim

1 .- 135 . (canceled)

136 . A system comprising:
an optical device configured to deflect target light towards a target device; a linear polarizer configured to transmit light with a linear polarization state; and an optical retarder configured to alter a polarization state of light passing through the optical retarder, wherein the linear polarizer and the optical retarder are configured to cause ambient light coming from a first side of the linear polarizer to pass through the linear polarizer and the optical retarder to be incident on the target device and deflected back from the target device to pass through the optical retarder to be blocked from a second side of the linear polarizer by the linear polarizer, the second side of the linear polarizer being opposite to the first side of the linear polarizer, and wherein the optical device, the linear polarizer, and the optical retarder are configured to cause the target light to be incident on the target device and deflected back from the target device to transmit from the second side of the linear polarizer through the linear polarizer.

137 . The system of claim 136 , wherein the optical device is configured to guide the target light along a first direction and diffract to the target device along a second direction different from the first direction, without passing through the linear polarizer from the first side of the linear polarizer.

138 . The system of claim 136 , wherein the linear polarizer and the optical retarder are configured to cause the ambient light to pass through the linear polarizer once and the optical retarder twice sequentially, and
wherein the optical device, the linear polarizer, and the optical retarder are configured to cause the target light to pass through the optical retarder twice and the linear polarizer once sequentially.

139 . The system of claim 136 , wherein the linear polarizer and the optical retarder are configured to cause the ambient light incident on the second side of the linear polarizer and the ambient light transmitted out from the first side of the linear polarizer with opposite polarization states.

140 . The system of claim 136 , wherein the optical retarder is configured to:
alter linearly polarized light passing through the optical retarder into circular polarized light, or alter circular polarized light passing through the optical retarder into linearly polarized light.

141 . The system of claim 140 , wherein the optical retarder comprises a quarter-wave plate (QWP).

142 . The system of claim 141 , wherein the quarter-wave plate is oriented at 45° to a transmission angle of the linear polarizer.

143 . The system of claim 136 , wherein the target device is configured to:
deflect the ambient light, without altering a polarization state of the ambient light, and deflect the target light, without altering a polarization state of the target light.

144 . The system of claim 136 , wherein an intensity of the target light transmitted from the linear polarizer is about a half of an intensity of the target light deflected from the display.

145 . The system of claim 136 , wherein the target device is a reflective device.

146 . The system of claim 136 , wherein the linear polarizer and the optical retarder are arranged on a first side of the optical device, and the target device is arranged on a second side of the optical device that is opposite to the first side of the optical device, and
wherein the optical retarder is between the linear polarizer and the optical device.

147 . The system of claim 146 , wherein,
the target light is deflected by the optical device with a first polarization state that is same as the linear polarization state of the linear polarizer, the target light is incident on the linear polarizer from the second side of the linear polarizer with a circular polarization state, and wherein the target light is incident on the target device with the first polarization state, and deflected back from the target device with the first polarization state.

148 . The system of claim 146 , wherein the linear polarization state is a first linear polarization state,
the ambient light is incident on a first side of the optical retarder with the first linear polarization state, and the optical retarder converts the first linear polarization state of the ambient light into a circular polarization state, the ambient light is deflected back from the target device with the circular polarization state to a second side of the optical retarder opposite to the first side of the optical retarder, and the optical retarder converts the circular polarization state of the ambient light to a second linear polarization state that is opposite to the first linear polarization state.

149 . The system of claim 148 , wherein the first linear polarization state is one of S polarization state and P polarization state, and the second linear polarization state is the other one of S polarization stat and P polarization state.

150 . The system of claim 136 , wherein the linear polarizer is arranged on a first side of the optical device, and the target device is arranged on a second side of the optical device that is opposite to the first side of the optical device, and
wherein the optical retarder is arranged on the second side of the optical device and between the optical device and the target device.

151 . The system of claim 150 , wherein the linear polarization state is a first linear polarization state,
the target light is deflected by the optical device with a second linear polarization state to be incident on a first side of the optical retarder, the second linear polarization state being opposite to the first linear polarization state, and the optical retarder converts the second linear polarization state of the target light into a circular polarization state, the target light is incident on the target device with the circular polarization state, and is deflected back from the target device with the circular polarization state to a second side of the optical retarder that is opposite to the first side of the optical retarder, and the optical retarder converts the circular polarization state of the target light into the first linear polarization state, and the target light is incident on the second side of the linear polarizer with the first linear polarization state and transmitted through the linear polarizer.

152 . The system of claim 150 , wherein the linear polarization state is a first linear polarization state,
the ambient light is incident on a first side of the optical retarder with the first linear polarization state, and the optical retarder converts the first linear polarization state of the ambient light into a circular polarization state, the ambient light is deflected back from the target device with the circular polarization state to the optical retarder, and the optical retarder converts the circular polarization state of the ambient light to a second linear polarization state that is opposite to the first linear polarization state, and the ambient light is incident on the second side of the linear polarizer with the second linear polarization state and is blocked by the linear polarizer.

153 . The system of claim 151 , wherein the first linear polarization state is one of S polarization state and P polarization state, and the second linear polarization state is the other one of S polarization stat and P polarization state.

154 . The system of claim 136 , wherein the linear po

Assignees

• Pacific Light & Hologram Inc

Inventors

• Blackley Jonathan Seamus
• Bahr Richard
• Boyett Watson Brent
• Colin Sylvain Marcel
• Green Robin James
• Guasch Isaac Serrano
• Hart Stephen John
• Hess Robert Alan
• Hsu Margaret H
• Jutrzenka Christoph Von
• Kim Deagyu
• Loya Mark Anthony
• Macneill Kelly Swan
• Neil Benjamin Francis
• Qaderi Kamran
• Qin Tina
• Ramirez Jesus Manuel Caridad
• Sashidharan Jayakrishna
• Sefami Asher Zelig
• Smith Jeff
• Srinivasiah Robert David
• Walavalkar Sameer Sudhir
• Wiensch Joshua D
• Williamson Daniel Dereck

Classifications

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G09G3/36

  using liquid crystals · CPC title

• G09G3/3413

  Details of control of colour illumination sources · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G09G3/003 Primary

  to produce spatial visual effects · CPC title