Patents by Inventor Vikramjit Singh

Vikramjit Singh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250147222
    Abstract: The disclosure describes an improved drop-on-demand, controlled volume technique for dispensing resist onto a substrate, which is then imprinted to create a patterned optical device suitable for use in optical applications such as augmented reality and/or mixed reality systems. The technique enables the dispensation of drops of resist at precise locations on the substrate, with precisely controlled drop volume corresponding to an imprint template having different zones associated with different total resist volumes. Controlled drop size and placement also provides for substantially less variation in residual layer thickness across the surface of the substrate after imprinting, compared to previously available techniques. The technique employs resist having a refractive index closer to that of the substrate index, reducing optical artifacts in the device.
    Type: Application
    Filed: January 13, 2025
    Publication date: May 8, 2025
    Inventors: Matthew C. Traub, Yingnan Liu, Vikramjit Singh, Frank Y. Xu, Robert D. Tekolste, Qizhen Xue, Samarth Bhargava, Victor Kai Liu, Brandon Michael-James Born, Kevin Messer
  • Publication number: 20250147318
    Abstract: An eyepiece waveguide for augmented reality applications includes a substrate and a set of incoupling diffractive optical elements coupled to the substrate. A first subset of the set of incoupling diffractive optical elements is operable to diffract light into the substrate along a first range of propagation angles and a second subset of the set of incoupling diffractive optical elements is operable to diffract light into the substrate along a second range of propagation angles. The eyepiece waveguide also includes a combined pupil expander diffractive optical element coupled to the substrate.
    Type: Application
    Filed: January 7, 2025
    Publication date: May 8, 2025
    Applicant: Magic Leap, Inc.
    Inventors: Chinmay Khandekar, Robert D. Tekolste, Vikramjit Singh, Victor Kai Liu, Ryan Ong, Kristina Uhlendorf
  • Publication number: 20250138316
    Abstract: In an example method for forming a variable optical viewing optics assembly (VOA) for a head mounted display, a prepolymer is deposited onto a substrate having a first optical element for the VOA. Further, a mold is applied to the prepolymer to conform the prepolymer to a curved surface of the mold on a first side of the prepolymer and to conform the prepolymer to a surface of the substrate on a second side of the prepolymer opposite the first side. Further, the prepolymer is exposed to actinic radiation sufficient to form a solid polymer from the prepolymer, such that the solid polymer forms an ophthalmic lens having a curved surface corresponding to the curved surface of the mold, and the substrate and the ophthalmic lens form an integrated optical component. The mold is released from the solid polymer, and the VOA is assembled using the integrated optical component.
    Type: Application
    Filed: August 31, 2022
    Publication date: May 1, 2025
    Inventors: Bach Nguyen, Vikramjit Singh, Ravi Kumar Komanduri, Jason Allen Shultz, Ryan Jason Ong, Matthew Traub, Frank Y. Xu
  • Publication number: 20250134194
    Abstract: An elastomeric glove includes a superimposed texture provided on a surface of the elastomeric glove, including front and back of a palm region, a thumb region and fingers region, and the superimposed texture includes multiple units of a stellate convex polygon distributed on the surface of the elastomeric glove, with a tip at the center and folded at intersects of the polygon for gripping, diverting and channeling fluid away from the surface of the elastomeric glove. A synthetic latex formulation for producing the elastomeric glove is also disclosed.
    Type: Application
    Filed: October 25, 2024
    Publication date: May 1, 2025
    Inventors: Monichan Puthuvelil MATHEW, Vikramjit Singh HORA, Andrew KELLS
  • Patent number: 12276825
    Abstract: A method of fabricating an optical element includes providing a substrate, forming a castable material coupled to the substrate, and casting the castable material using a mold. The method also includes curing the castable material and removing the mold. The optical element comprises a planar region and a clear aperture adjacent the planar region and characterized by an optical power.
    Type: Grant
    Filed: November 17, 2023
    Date of Patent: April 15, 2025
    Assignee: Magic Leap, Inc.
    Inventors: Chulwoo Oh, Ravi Kumar Komanduri, Vikramjit Singh, Shuqiang Yang, Frank Y. Xu
  • Publication number: 20250115015
    Abstract: Fabricating a high refractive index photonic device includes disposing a polymerizable composition on a first surface of a first substrate and contacting the polymerizable composition with a first surface of a second substrate, thereby spreading the polymerizable composition on the first surface of the first substrate. The polymerizable composition is cured to yield a polymeric structure having a first surface in contact with the first surface of the first substrate, a second surface opposite the first surface of the polymeric structure and in contact with the first surface of the second substrate, and a selected residual layer thickness between the first surface of the polymeric structure and the second surface of the polymeric structure in the range of 10 ?m to 1 cm. The polymeric structure is separated from the first substrate and the second substrate to yield a monolithic photonic device having a refractive index of at least 1.6.
    Type: Application
    Filed: December 16, 2024
    Publication date: April 10, 2025
    Inventors: Sharad D. Bhagat, Christophe Peroz, Vikramjit Singh, Frank Y. Xu
  • Publication number: 20250085553
    Abstract: Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection within the waveguide. The in-coupled light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby reducing the amount of in-coupled light propagating through the waveguide.
    Type: Application
    Filed: November 20, 2024
    Publication date: March 13, 2025
    Inventors: Jeffrey Dean SCHMULEN, Neal Paul RICKS, Samarth BHARGAVA, Kevin MESSER, Victor Kai LIU, Matthew Grant DIXON, Xiaopei DENG, Marlon Edward MENEZES, Shuqiang YANG, Vikramjit SINGH, Kang LUO, Frank Y. XU
  • Publication number: 20250076651
    Abstract: Disclosed herein are systems and methods for displays, such as for a head wearable device. An example display can include an infrared illumination layer, the infrared illumination layer including a substrate, one or more LEDs disposed on a first surface of the substrate, and a first encapsulation layer disposed on the first surface of the substrate, where the encapsulation layer can include a nano-patterned surface. In some examples, the nano-patterned surface can be configured to improve a visible light transmittance of the illumination layer. In one or more examples, embodiments disclosed herein may provide a robust illumination layer that can reduce the haze associated with an illumination layer.
    Type: Application
    Filed: April 13, 2022
    Publication date: March 6, 2025
    Inventors: Vikramjit SINGH, Michael Nevin MILLER, T.G. ANDERSON, Frank Y. XU
  • Publication number: 20250053009
    Abstract: A waveguide stack having color-selective regions on one or more waveguides. The color-selective regions are configured to absorb incident light of a first wavelength range in such a way as to reduce or prevent the incident light of the first wavelength range from coupling into a waveguide configured to transmit a light of a second wavelength range.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 13, 2025
    Inventors: Vikramjit Singh, Matthew C. Traub, Marlon Edward Menezes, Yingnan Liu, Frank Y. Xu
  • Patent number: 12222537
    Abstract: The disclosure describes an improved drop-on-demand, controlled volume technique for dispensing resist onto a substrate, which is then imprinted to create a patterned optical device suitable for use in optical applications such as augmented reality and/or mixed reality systems. The technique enables the dispensation of drops of resist at precise locations on the substrate, with precisely controlled drop volume corresponding to an imprint template having different zones associated with different total resist volumes. Controlled drop size and placement also provides for substantially less variation in residual layer thickness across the surface of the substrate after imprinting, compared to previously available techniques. The technique employs resist having a refractive index closer to that of the substrate index, reducing optical artifacts in the device.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: February 11, 2025
    Assignee: Magic Leap, Inc.
    Inventors: Matthew C Traub, Yingnan Liu, Vikramjit Singh, Frank Y. Xu, Robert D. Tekolste, Qizhen Xue, Samarth Bhargava, Victor Kai Liu, Brandon Michael-James Born, Kevin Messer
  • Publication number: 20250044573
    Abstract: An eyepiece includes an optical waveguide, a transmissive input coupler at a first end of the optical waveguide, an output coupler at a second end of the optical waveguide, and a polymeric color absorbing region along a portion of the optical waveguide between the transmissive input coupler and the output coupler. The transmissive input coupler is configured to couple incident visible light to the optical waveguide, and the color-absorbing region is configured to absorb a component of the visible light as the visible light propagates through the optical waveguide.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 6, 2025
    Inventors: Vikramjit Singh, Matthew C. Traub, Frank Y. Xu
  • Publication number: 20250028115
    Abstract: An augmented reality device includes a projector, projector optics optically coupled to the projector, and a substrate structure including a substrate having an incident surface and an opposing exit surface and a first variable thickness film coupled to the incident surface. The substrate structure can also include a first combined pupil expander coupled to the first variable thickness film, a second variable thickness film coupled to the opposing exit surface, an incoupling grating coupled to the opposing exit surface, and a second combined pupil expander coupled to the opposing exit surface.
    Type: Application
    Filed: October 4, 2024
    Publication date: January 23, 2025
    Applicant: Magic Leap, Inc.
    Inventors: Robert D. Tekolste, Ryan Jason Ong, Victor Kai Liu, Samarth Bhargava, Christophe Peroz, Vikramjit Singh, Marlon Edward Menezes, Shuqiang Yang, Frank Y. Xu
  • Publication number: 20250020841
    Abstract: Diffraction gratings provide optical elements, e.g., in a head-mountable display system, that can affect light, for example by incoupling light into a waveguide, outcoupling light out of a waveguide, and/or multiplying light propagating in a waveguide. The diffraction gratings may be configured to have reduced polarization sensitivity such that light of different polarization states, or polarized and unpolarized light, is incoupled, outcoupled, multiplied, or otherwise affected with a similar level of efficiency. The reduced polarization sensitivity may be achieved through provision of a transmissive layer and a metallic layer on one or more gratings. A diffraction grating may comprise a blazed grating or other suitable configuration.
    Type: Application
    Filed: September 26, 2024
    Publication date: January 16, 2025
    Inventors: Vikramjit Singh, Kang Luo, Xiaopei Deng, Shuqiang Yang, Frank Y. Xu, Kevin Messer
  • Patent number: 12194696
    Abstract: Fabricating a high refractive index photonic device includes disposing a polymerizable composition on a first surface of a first substrate and contacting the polymerizable composition with a first surface of a second substrate, thereby spreading the polymerizable composition on the first surface of the first substrate. The polymerizable composition is cured to yield a polymeric structure having a first surface in contact with the first surface of the first substrate, a second surface opposite the first surface of the polymeric structure and in contact with the first surface of the second substrate, and a selected residual layer thickness between the first surface of the polymeric structure and the second surface of the polymeric structure in the range of 10 ?m to 1 cm. The polymeric structure is separated from the first substrate and the second substrate to yield a monolithic photonic device having a refractive index of at least 1.6.
    Type: Grant
    Filed: August 3, 2023
    Date of Patent: January 14, 2025
    Assignee: Molecular Imprints, Inc.
    Inventors: Sharad D. Bhagat, Christophe Peroz, Vikramjit Singh, Frank Y. Xu
  • Patent number: 12181679
    Abstract: Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: December 31, 2024
    Assignee: Magic Leap, Inc.
    Inventors: Jeffrey Dean Schmulen, Neal Paul Ricks, Samarth Bhargava, Kevin Messer, Victor Kai Liu, Matthew Grant Dixon, Xiaopei Deng, Marlon Edward Menezes, Shuqiang Yang, Vikramjit Singh, Kang Luo, Frank Y. Xu
  • Publication number: 20240418928
    Abstract: The disclosure describes an improved drop-on-demand, controlled volume technique for dispensing resist onto a substrate, which is then imprinted to create a patterned optical device suitable for use in optical applications such as augmented reality and/or mixed reality systems. The technique enables the dispensation of drops of resist at precise locations on the substrate, with precisely controlled drop volume corresponding to an imprint template having different zones associated with different total resist volumes. Controlled drop size and placement also provides for substantially less variation in residual layer thickness across the surface of the substrate after imprinting, compared to previously available techniques. The technique employs resist having a refractive index closer to that of the substrate index, reducing optical artifacts in the device.
    Type: Application
    Filed: January 20, 2023
    Publication date: December 19, 2024
    Inventors: Matthew C Traub, Yingnan Liu, Vikramjit Singh, Frank Y. Xu, Robert D. Tekolste, Qizhen Xue, Samarth Bhargava, Victor Kai Liu, Brandon Michael-James Born, Kevin Messer
  • Publication number: 20240375343
    Abstract: Systems, apparatus, and methods for double-sided imprinting are provided. An example system includes first rollers for moving a first web including a first template having a first imprinting feature, second rollers for moving a second web including a second template having a second imprinting feature, dispensers for dispensing resist, a locating system for locating reference marks on the first and second webs for aligning the first and second templates, a light source for curing the resist, such that a cured first resist has a first imprinted feature corresponding to the first imprinting feature on one side of the substrate and a cured second resist has a second imprinted feature corresponding to the second imprinting feature on the other side of the substrate, and a moving system for feeding in the substrate between the first and second templates and unloading the double-imprinted substrate from the first and second webs.
    Type: Application
    Filed: July 25, 2024
    Publication date: November 14, 2024
    Inventors: Roy Patterson, Charles Scott Carden, Satish Sadam, Ryan Christiansen, Matthew S. Shafran, Christopher John Fleckenstein, Vikramjit Singh, Michael Nevin Miller, Kang LUO
  • Patent number: 12135442
    Abstract: Diffraction gratings provide optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. These diffraction gratings may be configured to have reduced polarization sensitivity. Such gratings may, for example, incouple or outcouple light of different polarizations, or polarized and unpolarized light, with a similar level of efficiency. The diffraction gratings and waveguides may include a transmissive layer and a metal layer. The diffraction grating may comprise a blazed grating.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: November 5, 2024
    Assignee: Magic Leap, Inc.
    Inventors: Vikramjit Singh, Kang Luo, Xiaopei Deng, Shuqiang Yang, Frank Y. Xu, Kevin Messer
  • Publication number: 20240361602
    Abstract: Blazed diffraction gratings provide optical elements in head-mounted display systems to, e.g., incouple light into or out-couple light out of a waveguide. These blazed diffraction gratings may be configured to have reduced polarization sensitivity. Such gratings may, for example, incouple or outcouple light of different polarizations with similar level of efficiency. The blazed diffraction gratings and waveguides may be formed in a high refractive index substrate such as lithium niobate. In some implementations, the blazed diffraction gratings may include diffractive features having a feature height of 40 nm to 120 nm, for example, 80 nm. The diffractive features may be etched into the high index substrate, e.g., lithium niobate.
    Type: Application
    Filed: July 8, 2024
    Publication date: October 31, 2024
    Inventors: Kang LUO, Vikramjit SINGH, Nai-Wen PI, Shuqiang YANG, Frank Y. XU
  • Publication number: 20240359372
    Abstract: Methods are disclosed for fabricating molds for forming waveguides with integrated spacers for forming eyepieces. The molds are formed by etching features (e.g., 1 ?m to 1000 ?m deep) into a substrate comprising single crystalline material using an anisotropic wet etch. The etch masks for defining the large features may comprise a plurality of holes, wherein the size and shape of each hole at least partially determine the depth of the corresponding large feature. The holes may be aligned along a crystal axis of the substrate and the etching may automatically stop due to the crystal structure of the substrate. The patterned substrate may be utilized as a mold onto which a flowable polymer may be introduced and allowed to harden. Hardened polymer in the holes may form a waveguide with integrated spacers. The mold may be also used to fabricate a platform comprising a plurality of vertically extending microstructures of precise heights, to test the curvature or flatness of a sample, e.g.
    Type: Application
    Filed: August 17, 2022
    Publication date: October 31, 2024
    Inventors: Shuqiang YANG, Vikramjit SINGH, David James LENTZ, Frank Y. XU, Marlon Edward MENEZES, Yanhua WANG