Patents by Inventor Tanya Malhotra
Tanya Malhotra 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).
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Publication number: 20230176380Abstract: A pupil-replicating lightguide includes a slab of transparent material for guiding image light in the slab, and an out-coupling structure supported by the slab for out-coupling portions of the image light from the slab. The portions are laterally offset from one another along a path of the image light in the slab. The out-coupling grating structure has a switchable distribution of out-coupling efficiency for redirecting the portions of out-coupled light to a desired location such as a current location of an eye of the viewer determined by an eye tracking system. The out-coupling grating structure may include a plurality of diffraction gratings having different local slant angles of grating fringes.Type: ApplicationFiled: March 18, 2022Publication date: June 8, 2023Inventors: Sihui He, Jacques Gollier, Maxwell Parsons, Babak Amirsolaimani, Wanli Chi, Daniel Guenther Greif, Renate Eva Klementine Landig, Xiayu Feng, Zhimin Shi, Nicholas John Diorio, Yang Yang, Giuseppe Calafiore, Fenglin Peng, Tanya Malhotra, Andrew John Ouderkirk
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Patent number: 11668866Abstract: An optical device includes a first polarization selective reflector positioned in a first orientation so that the first polarization selective reflector: receives first light in a first direction; redirects a first portion, of the first light, having a first polarization to a second direction that is non-parallel to the first direction; and receives second light in a third direction and transmit a first portion, of the second light. A second polarization selective reflector positioned in a second orientation non-parallel to the first orientation, and adjacent to the first polarization selective reflector so that the second polarization selective reflector: receives third light in a fourth direction; redirects a first portion, of the third light, having the first polarization to a fifth direction that is non-parallel to the fourth direction; and receives fourth light in a sixth direction and transmit a first portion, of the fourth light having the second polarization.Type: GrantFiled: May 14, 2020Date of Patent: June 6, 2023Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Andrew John Ouderkirk, Tanya Malhotra, Brian Wheelwright, Weichuan Gao, Ying Geng
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Patent number: 11662510Abstract: A polymer layer includes a first in-plane refractive index extending along a first direction of the polymer layer, a second in-plane refractive index less than the first in-plane refractive index extending along a second direction of the polymer layer orthogonal to the first direction, a third refractive index along a direction orthogonal to both the first direction and the second direction, and a plurality of wrinkles extending along a surface of the polymer layer, where a difference between the first in-plane refractive index and the second in-plane refractive index is at least approximately 0.05, and the third refractive index is greater than the second in-plane refractive index.Type: GrantFiled: January 7, 2020Date of Patent: May 30, 2023Assignee: Meta Platforms Technologies, LLCInventors: Andrew John Ouderkirk, Tanya Malhotra, Sheng Ye, Liliana Ruiz Diaz
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Patent number: 11656395Abstract: An optical device includes a first polarization selective reflector; a second polarization selective reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs first light toward the second polarization selective reflector and the second polarization selective reflector directs at least a portion of the first light toward the first polarization selective reflector as second light. The optical device includes a first reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs at least a portion of the second light received from the second polarization selective reflector toward the first reflector as third light and the first reflector directs at least a portion of third light toward the first polarization selective reflector.Type: GrantFiled: May 14, 2020Date of Patent: May 23, 2023Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Andrew John Ouderkirk, Tanya Malhotra, Weichuan Gao, Ying Geng
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Patent number: 11650403Abstract: An example device may include a light source, an optical element, and, optionally, an encapsulant layer. A light beam generated by the light source may be received by the optical element and redirected towards an illumination target, such as an eye of a user. The optical element may include a material, for example, with a refractive index of at least approximately 2 at a wavelength of the light beam. The light source may be a semiconductor light source, such as a light-emitting diode or a laser. The optical element may be supported by an emissive surface of the light source. Refraction at an exit surface of the optical element, and/or within a metamaterial layer, may advantageously modify the beam properties, for example, in relation to illuminating a target. In some examples, the light source and optical element may be integrated into a monolithic light source module.Type: GrantFiled: January 23, 2020Date of Patent: May 16, 2023Assignee: Meta Platforms Technologies, LLCInventors: Robin Sharma, Andrew John Ouderkirk, Christopher Yuan Ting Liao, Qi Zhang, Tanya Malhotra, Karol Constantine Hatzilias, Maik Scheller, Sheng Ye, Gregory Olegovic Andreev, Guohua Wei
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Patent number: 11639559Abstract: An optical element is provided. The optical element includes a solid crystal including crystal molecules aligned in a predetermined alignment pattern at least partially defined by an alignment structure.Type: GrantFiled: January 27, 2021Date of Patent: May 2, 2023Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Tanya Malhotra, Tingling Rao, Andrew John Ouderkirk, Arman Boromand, Lafe Joseph Purvis, Oleg Yaroshchuk, Sheng Ye, Sandeep Rekhi
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Patent number: 11631818Abstract: An organic field effect transistor includes a channel structure having a photoalignment layer and an organic semiconductor layer disposed directly over the photoalignment layer, where a charge carrier mobility varies along a thickness direction of the channel structure. The channel structure may define an active area between a source and a drain of the transistor and may include alternating layers of at least two photoalignment layers and at least two organic semiconductor layers. Each photoalignment layer is configured to influence an orientation of molecules within an overlying organic semiconductor layer and hence impact the mobility of charge carriers within the device active area while also advantageously decreasing the OFF current of the device.Type: GrantFiled: November 16, 2020Date of Patent: April 18, 2023Assignee: Meta Platforms Technologies, LLCInventors: Tingling Rao, Lafe Purvis, Tanya Malhotra, Andrew John Ouderkirk
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Patent number: 11594672Abstract: Examples include a device including a nanovoided polymer element having a first surface and a second surface, a first plurality of electrodes disposed on the first surface, a second plurality of electrodes disposed on the second surface, and a control circuit configured to apply an electrical potential between one or more of the first plurality of electrodes and one or more of the second plurality of electrodes to induce a physical deformation of the nanovoided polymer element.Type: GrantFiled: May 21, 2019Date of Patent: February 28, 2023Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Tanya Malhotra, Kenneth Diest, Andrew John Ouderkirk, Robin Sharma, Barry Silverstein, Christopher Yuan Ting Liao, Erik Shipton, Greg Olegovic Andreev, Katherine Marie Smyth
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Publication number: 20230034754Abstract: A method of forming an organic solid crystal (OSC) thin film includes forming a layer of a non-volatile medium material over a surface of a mold, forming a layer of a molecular feedstock over a surface of the non-volatile medium material, the molecular feedstock including an organic solid crystal precursor, forming crystal nuclei from the organic solid crystal precursor, and growing the crystal nuclei to form the organic solid crystal thin film. An organic solid crystal (OSC) thin film may include a biaxially-oriented organic solid crystal layer having mutually orthogonal refractive indices, n1?n2?n3.Type: ApplicationFiled: March 23, 2022Publication date: February 2, 2023Inventors: Tingling Rao, Kimberly Kay Childress, Arman Boromand, Tanya Malhotra, Lafe Joseph Purvis, II, Taha Masood, Poer Sung, Andrew John Ouderkirk
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Patent number: 11567252Abstract: An optical device includes a first polarization selective reflector; a second polarization selective reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs first light having a first nonplanar polarization toward the second polarization selective reflector and the second polarization selective reflector directs at least a portion of the first light toward the first polarization selective reflector as second light. The optical device includes a first reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs at least a portion of the second light having a second nonplanar polarization toward the first reflector as third light.Type: GrantFiled: October 19, 2021Date of Patent: January 31, 2023Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Andrew John Ouderkirk, Tanya Malhotra, Weichuan Gao, Ying Geng, Babak Amirsolaimani
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Publication number: 20230023995Abstract: A display assembly includes a light source, a spatial light modulator (SLM) and a grating. The light source is configured to emit illumination light, the SLM is configured to receive the illumination light and reflect at least a portion of the illumination light. The grating is positioned to redirect the illumination light output from the light source toward the SLM, receive at least a portion of the reflected light from the SLM, redirect first light having a first polarization toward the light source, and transmit through the grating second light having a second polarization that is orthogonal to the first polarization. Also disclosed are operations performed by the display assembly.Type: ApplicationFiled: June 10, 2022Publication date: January 26, 2023Inventors: Fenglin PENG, Liangyu QIU, Ying GENG, Tanya MALHOTRA
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Patent number: 11563137Abstract: An optical transformer includes a light source and an array of photovoltaic cells optically coupled to the light source, where at least a portion of the photovoltaic cells are connected in series. An optical connector such as a waveguide or an optical fiber may be disposed between an output of the light source and an input of the array of photovoltaic cells. Configured to generate a high voltage output, the optical transformer may be configured to power a device such as an actuator that provides a tunable displacement as a function of voltage.Type: GrantFiled: October 7, 2019Date of Patent: January 24, 2023Assignee: Meta Platforms Technologies, LLCInventors: Maik Andre Scheller, Andrew John Ouderkirk, Jonathan Robert Peterson, Daniele Piazza, Jeremy Thomas Braun, Kenneth Diest, Spencer Allan Wells, Renate Eva Klementine Landig, Liliana Ruiz Diaz, Tanya Malhotra
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Publication number: 20220350065Abstract: A multilayer organic thin film includes a plurality of biaxially-oriented layers, where each layer is characterized by mutually orthogonal refractive indices, n1?n2?n3. In example structures, the corresponding in-plane refractive indices of adjacent layers may be rotated with respect to each other by a predetermined angle. Such a multilayer may be incorporated into a circular reflective polarizer, for example, which may be used in display systems to provide high broadband efficiency and high off-axis contrast. In an example process, individual organic thin films may be molded, and then oriented and stacked to form a multilayer.Type: ApplicationFiled: January 24, 2022Publication date: November 3, 2022Inventors: Tingling Rao, Yuge Huang, Lafe Joseph Purvis, II, Kimberly Kay Childress, Arman Boromand, Tanya Malhotra, Andrew John Ouderkirk, Lu Lu, Poer Sung
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Publication number: 20220342132Abstract: An organic thin film includes an organic solid crystal material and has mutually orthogonal refractive indices, nx, ny, and nz each having a value at 589 nm of between approximately 1.5 and approximately 2.6, where nx?ny?nz. The organic thin film may be birefringent, and may be configured as a single layer thin film, or plural organic thin films may be stacked to form a multilayer that may be incorporated into an optical element, such as a reflective polarizer.Type: ApplicationFiled: February 23, 2022Publication date: October 27, 2022Inventors: Lafe Joseph Purvis, II, Tingling Rao, Tanya Malhotra, Andrew John Ouderkirk, Arman Boromand, Kimberly Kay Childress, Philip Wang
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Patent number: 11474395Abstract: A waveguide display includes a substrate transparent to at least one of visible or near infrared light, and a grating on the substrate. The grating includes ridges formed using a birefringent material and is configured to selectively couple incident light in a first polarization state into or out of the substrate. The birefringent material in the ridges is characterized by an optic axis parallel to a plane that includes a grating vector of the grating.Type: GrantFiled: December 18, 2019Date of Patent: October 18, 2022Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Tanya Malhotra, Liangyu Qiu, Andrew John Ouderkirk
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Patent number: 11469347Abstract: A light-emitting diode includes a first semiconductor region of one of p- or n-conductivity types, a second semiconductor region of the other one of p- or n-conductivity types, forming a p-n junction with the first semiconductor region, and a quantum well layer at the p-n junction between the first and second semiconductor regions. A hyperbolic metamaterial structure is provided in the second semiconductor region. The hyperbolic metamaterial structure is coupled to the quantum well layer for extracting light from the quantum well layer. The hyperbolic metamaterial structure may be patterned to provide an array of nanoantennas to apodize the emitted beam, and to control the polarization state of the emitted beam.Type: GrantFiled: December 13, 2020Date of Patent: October 11, 2022Assignee: Meta Platforms Technologies LLCInventors: Erik Shipton, Tanya Malhotra
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Patent number: 11415808Abstract: An example device may include a light source, an optical element, and an encapsulant layer. A light beam generated by the light source may be received by the optical element, and redirected into the encapsulant layer. The optical element may include a high-index material, for example, with a refractive index of at least approximately 1.5 at the wavelength of the light beam. The light source may be a semiconductor light source, such as a light emitting diode or a laser. The optical element may be embedded in the encapsulant layer, and the optical element may have a curved exit surface. Refraction at the exit surface of the optical element may redirect the light beam towards a target.Type: GrantFiled: December 19, 2019Date of Patent: August 16, 2022Assignee: Facebook Technologies, LLCInventors: Robin Sharma, Andrew John Ouderkirk, Christopher Yuan Ting Liao, Qi Zhang, Tanya Malhotra, Karol Constantine Hatzillias, Maik Scheller, Sheng Ye, Gregory Olegovic Andreev
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Patent number: 11391948Abstract: A display assembly includes a light source, a spatial light modulator (SLM) and a grating. The light source is configured to emit illumination light, the SLM is configured to receive the illumination light and reflect at least a portion of the illumination light. The grating is positioned to redirect the illumination light output from the light source toward the SLM, receive at least a portion of the reflected light from the SLM, redirect first light having a first polarization toward the light source, and transmit through the grating second light having a second polarization that is orthogonal to the first polarization. Also disclosed are operations performed by the display assembly.Type: GrantFiled: February 24, 2020Date of Patent: July 19, 2022Assignee: Facebook Technologies, LLCInventors: Fenglin Peng, Liangyu Qiu, Ying Geng, Tanya Malhotra
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Patent number: 11306193Abstract: A method of forming a nanovoided composite polymer includes forming a resin-containing layer over a substrate, the resin-containing layer including a polymer-forming phase and a sacrificial phase, curing the polymer-forming phase to form a polymer matrix containing the sacrificial phase, and removing the sacrificial phase selectively with respect to the polymer matrix to form a nanovoided composite polymer including the polymer matrix and nanovoids dispersed throughout the polymer matrix. The nanovoids may be randomly or regularly dispersed throughout the matrix. Various other methods, systems, apparatuses, and materials are also disclosed.Type: GrantFiled: December 10, 2018Date of Patent: April 19, 2022Assignee: Facebook Technologies, LLCInventors: Austin Lane, Jack Lindsay, Katherine Marie Smyth, Thomas John Farrell Wallin, Andrew John Ouderkirk, Tanya Malhotra, Christopher Yuan Ting Liao, Yigit Mengue
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Publication number: 20220082749Abstract: A film stack includes a plurality of first films and a plurality of second films alternately stacked. At least one second film of the plurality of second films includes a solid crystal including crystal molecules aligned in a predetermined alignment direction. At least one first film of the plurality of first films includes an alignment structure configured to at least partially align the crystal molecules of the solid crystal in the predetermined alignment direction.Type: ApplicationFiled: June 30, 2021Publication date: March 17, 2022Inventors: Tanya MALHOTRA, Tingling RAO, Liliana Ruiz Diaz, Oleg Yaroshchuk, Sheng YE, Andrew John Ouderkirk, Alexander Koshelev, Lafe Joseph Purvis, II, Junren Wang, Arman Boromand