Magic Leap, Inc.

Innovalight, Inc.

University of Minnesota

Electric Power Research Institute Incorporated

David Carl Jurbergs

Victor Kai Liu

Jeffrey Dean Schmulen

Marlon Edward Menezes

Zongxing Wang

Christophe Peroz

Neal Paul Ricks

Michael Nevin Miller

Elena Rogojina

Sharad D Bhagat

Chieh Chang

Maxim Kelman

Ling Li

Pingrong Yu

Uwe Richard Kortshagen

Lorenzo Mangolini

Frank Y Xu

Vikramjit Singh

Shuqiang Yang

Kang Luo

Mauro Melli

Homer Antoniadis

Fahri Yaras

Francesco Lemmi

Nizan Meitav

Ryan Jason Ong

Xuegeng Li

Elijah J Thimsen

Ameya Bapat

Samarth Bhargava

Karel Vanheusden

Roy Matthew Patterson

John T McDevitt

Charles Scott Carden

Mohammadreza Khorasaninejad

David Kleinman

Rebecca J Anthony

A thin transparent layer can be integrated in a head mounted display device and disposed in front of the eye of a wearer. The thin transparent layer may be configured to output light such that light is directed onto the eye to create reflections therefrom that can be used, for example, for glint based tracking. The thin transparent layer can be configured to reduced obstructions in the field of the view of the user.

System for providing illumination of the eye

Color-selective waveguides, methods for fabricating color-selective waveguides, and augmented reality (AR)/mixed reality (MR) applications including color-selective waveguides are described. The color-selective waveguides can advantageously reduce or block stray light entering a waveguide (e.g., red, green, or blue waveguide), thereby reducing or eliminating back-reflection or back-scattering into the eyepiece.

Color-selective waveguides for augmented reality/mixed reality applications

In some embodiments, a head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting. The spacers are disposed on one major surface of each of the waveguides and indentations are provided on an opposite major surface of each of the waveguides. The indentations are sized and positioned to align with the spacers, thereby forming a self-aligned stack of waveguides. Tops of the spacers may be provided with light scattering features, anti-reflective coatings, and/or light absorbing adhesive to prevent light leakage between the waveguides. As seen in a top-down view, the spacers may be elongated along the same axis as the diffractive optical elements. The waveguides may include structures (e.g., layers of light absorbing materials, rough surfaces, light out-coupling optical elements, and/or light trapping microstructures) along their edges to mitigate reflections and improve the display contrast.

Waveguides having integrated spacers, waveguides having edge absorbers, and methods for making the same

In some embodiments, compositions and methods comprising reflective flowable materials, e.g., reflective liquids including reflective inks and/or liquid metals, are described. In some embodiments, a surface is contacted with a reflective flowable material, thereby forming a reflective layer on the surface. In some embodiments, the surface is a surface of a waveguide, for example a waveguide for a display device, and the flowable material coats surfaces of protrusions on the surface to form reflective diffractive optical elements. Some embodiments include a display device comprising a reflective layer of reflective flowable material.

Waveguides having reflective layers formed by reflective flowable materials

An eyepiece and waveguide for viewing a projected image in a virtual reality and augmented reality imaging and visualization system. The waveguide may include a substrate for guiding light. The waveguide may also include an incoupling diffractive element disposed within or on the substrate and configured to diffract an incoupled light related to the projected image into the substrate. The waveguide may further include a first grating disposed within or on the substrate and configured to manipulate the diffracted incoupled light from the incoupling diffractive element so as to multiply the projected image and to direct the multiplied projected image to a second grating. The second grating may be disposed within or on the substrate and may be configured to outcouple the manipulated diffracted incoupled light from the waveguide. The first grating and the second grating may occupy a same region of the waveguide.

Diffractive waveguide and eyepiece having image multiplying grating overlapping with outcoupling grating

A method of manufacturing a waveguide having a combination of a binary grating structure and a blazed grating structure includes cutting a substrate off-axis, depositing a first layer on the substrate, and depositing a resist layer on the first layer. The resist layer includes a pattern. The method also includes etching the first layer in the pattern using the resist layer as a mask. The pattern includes a first region and a second region. The method further includes creating the binary grating structure in the substrate in the second region and creating the blazed grating structure in the substrate in the first region.

Nanograting method and apparatus

Reflective diffractive gratings with variable reflectivity and display systems having the same

An apparatus for producing grafted Group IV nanoparticles is provided and includes a source of Group IV nanoparticles. A chamber is configured to carry the nanoparticles in a gas phase and has an inlet and an exit. The inlet configured to couple to an organic molecule source which is configured to provide organic molecules to the chamber. A plasma source is arranged to generate a plasma. The plasma causes the organic molecules to break down and/or activate in the chamber and bond to the nanoparticles. A method of producing grafted Group IV nanoparticles is also provided and includes receiving Group IV nanoparticles in a gas phase, creating a plasma with the nanoparticles, and allowing the organic molecules to break down and/or become activated in the plasma and bond with the nanoparticles.

Nanoparticles with grafted organic molecules

Methods and apparatus for producing nanoparticles, including single-crystal semiconductor nanoparticles, are provided. The methods include the step of generating a constricted radiofrequency plasma in the presence of a precursor gas containing precursor molecules to form nanoparticles. Single-crystal semiconductor nanoparticles, including photoluminescent silicon nanoparticles, having diameters of no more than 10 nm may be fabricated in accordance with the methods.

Process and apparatus for forming nanoparticles using radiofrequency plasmas

A method of forming a densified nanoparticle thin film is disclosed. The method includes positioning a substrate in a first chamber; and depositing a nanoparticle ink, the nanoparticle ink including a set of Group IV semiconductor particles and a solvent. The method also includes heating the nanoparticle ink to a first temperature between about 30&#xb0; C. and about 300&#xb0; C., and for a first time period between about 1 minute and about 60 minutes, wherein the solvent is substantially removed, and a porous compact is formed; and positioning the substrate in a second chamber, the second chamber having a pressure of between about 1&#xd7;10Torr and about 1&#xd7;10Torr. The method further includes depositing on the porous compact a dielectric material; wherein the densified nanoparticle thin film is formed.

Methods of filling a set of interstitial spaces of a nanoparticle thin film with a dielectric material

Growing community of inventors

Austin, TX, United States of America

David Carl Jurbergs