Patents by Inventor Mei Li Hsieh
Mei Li Hsieh 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: 20230261124Abstract: A high absorption photovoltaic material and method of making the material for use in a solar cell are disclosed. The photovoltaic material includes a surface modified with a layer of repeating photonic crystal structures. The photonic crystal structures are approximately inverse conically shaped and have a curved sidewall that has an approximately Gaussian shape. The photonic crystal structures generally have a high vertical depth and sidewall angle. The structures also have a gradient refractive index profile and exhibit the parallel-to-interface refraction light trapping effect. An anti-reflective coating is disposed over the photonic crystal structure layer. The photovoltaic material exhibits near unity light absorption over a broad range of visible and near infrared wavelengths and incidence angles, even at reduced thicknesses.Type: ApplicationFiled: April 20, 2023Publication date: August 17, 2023Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Ping KUANG, Shawn Yu LIN, Anthony POST, Sajeev Oommen JOHN, Sergey Leonidovich EYDERMAN, Mei-Li HSIEH
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Patent number: 11658253Abstract: A high absorption photovoltaic material and method of making the material for use in a solar cell are disclosed. The photovoltaic material includes a surface modified with a layer of repeating photonic crystal structures. The photonic crystal structures are approximately inverse conically shaped and have a curved sidewall that has an approximately Gaussian shape. The photonic crystal structures generally have a high vertical depth and sidewall angle. The structures also have a gradient refractive index profile and exhibit the parallel-to-interface refraction light trapping effect. An anti-reflective coating is disposed over the photonic crystal structure layer. The photovoltaic material exhibits near unity light absorption over a broad range of visible and near infrared wavelengths and incidence angles, even at reduced thicknesses.Type: GrantFiled: November 18, 2020Date of Patent: May 23, 2023Assignee: Rensselaer Polytechnic InstituteInventors: Ping Kuang, Shawn Yu Lin, Anthony Post, Sajeev Oommen John, Sergey Leonidovich Eyderman, Mei-Li Hsieh
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Publication number: 20210074867Abstract: A high absorption photovoltaic material and method of making the material for use in a solar cell are disclosed. The photovoltaic material includes a surface modified with a layer of repeating photonic crystal structures. The photonic crystal structures are approximately inverse conically shaped and have a curved sidewall that has an approximately Gaussian shape. The photonic crystal structures generally have a high vertical depth and sidewall angle. The structures also have a gradient refractive index profile and exhibit the parallel-to-interface refraction light trapping effect. An anti-reflective coating is disposed over the photonic crystal structure layer. The photovoltaic material exhibits near unity light absorption over a broad range of visible and near infrared wavelengths and incidence angles, even at reduced thicknesses.Type: ApplicationFiled: November 18, 2020Publication date: March 11, 2021Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Ping KUANG, Shawn Yu LIN, Anthony POST, Sajeev Oommen JOHN, Sergey Leonidovich EYDERMAN, Mei-Li HSIEH
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Publication number: 20190140115Abstract: A high absorption photovoltaic material and method of making the material for use in a solar cell are disclosed. The photovoltaic material includes a surface modified with a layer of repeating photonic crystal structures. The photonic crystal structures are approximately inverse conically shaped and have a curved sidewall that has an approximately Gaussian shape. The photonic crystal structures generally have a high vertical depth and sidewall angle. The structures also have a gradient refractive index profile and exhibit the parallel-to-interface refraction light trapping effect. An anti-reflective coating is disposed over the photonic crystal structure layer. The photovoltaic material exhibits near unity light absorption over a broad range of visible and near infrared wavelengths and incidence angles, even at reduced thicknesses.Type: ApplicationFiled: May 8, 2017Publication date: May 9, 2019Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Ping KUANG, Shawn Yu LIN, Anthony POST, Sajeev Oommen JOHN, Sergey Leonidovich EYDERMAN, Mei-Li HSIEH
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Patent number: 9362460Abstract: The invention is directed to an integrated polarized light emitting diode device that has a light emitting diode, a metal grating, an oxide layer, and a built-in photonic crystal rotator. Additional teachings include a method for making the integrated polarized light emitting diode, a method for improving the polarization selectivity and energy efficiency of a light emitting diode, and a method for rotating polarization of a light emitting diode.Type: GrantFiled: July 19, 2011Date of Patent: June 7, 2016Assignee: RENSSELAER POLYTECHNIC INSTITUTEInventors: Shawn-Yu Lin, Yong Sung Kim, Mei-Li Hsieh
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Patent number: 8987016Abstract: The invention relates to light-emitting devices, and related components, systems and methods. In one aspect, the present invention is related to light emitting diode (LED) light extraction efficiency. A non-limiting example, the application teaches a method for improving light emitting diode (LED) extraction efficiency, by providing a nano-rod light emitting diode; providing quantum wells; and reducing the size of said nano-rod LED laterally in the quantum-well plane (x and y), thereby improving LED extraction efficiency.Type: GrantFiled: August 16, 2011Date of Patent: March 24, 2015Assignee: Rensselaer Polytechnic InstituteInventors: Mei-Ling Kuo, Shawn-Yu Lin, Yong Sung Kim, Mei-Li Hsieh
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Publication number: 20130221323Abstract: The invention relates to light-emitting devices, and related components, systems and methods. In one aspect, the present invention is related to light emitting diode (LED) light extraction efficiency. A non-limiting example, the application teaches a method for improving light emitting diode (LED) extraction efficiency, by providing a nano-rod light emitting diode; providing quantum wells; and reducing the size of said nano-rod LED laterally in the quantum-well plane (x and y), thereby improving LED extraction efficiency.Type: ApplicationFiled: August 16, 2011Publication date: August 29, 2013Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Mei-Ling Kuo, Shawn-Yu Lin, Yong-Sung Kim, Mei-Li Hsieh
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Publication number: 20130161677Abstract: The invention is directed to an integrated polarized light emitting diode device that has a light emitting diode, a metal grating, an oxide layer, and a built-in photonic crystal rotator. Additional teachings include a method for making the integrated polarized light emitting diode, a method for improving the polarization selectivity and energy efficiency of a light emitting diode, and a method for rotating polarization of a light emitting diode.Type: ApplicationFiled: July 19, 2011Publication date: June 27, 2013Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Shawn-Yu Lin, Yong Sung Kim, Mei-Li Hsieh
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Patent number: 8009341Abstract: In a holographic information recording and reproducing apparatus, an optical fiber guides a reference beam toward a recording medium for holographic recording, and a precision rotator is turned, so that the reference beam is incident on the recording medium at different angles and interferes with a data-carrying signal beam to complete the recording of holographic information on the recording medium. To reproduce the holographic information, the optical fiber guides a reading beam, and the reading beam is incident on the recording medium at an angle the same as the reference beam for the recording to reproduce the holographic information stored on the recording medium. With the optical fiber and the precision rotator, a simplified light path system and a wide range of incident angles for the reference and reading beams may be achieved, and the transmissive, reflective, and 90-degree holographic storage techniques may be integrated in one single apparatus.Type: GrantFiled: October 29, 2008Date of Patent: August 30, 2011Assignees: CMC Magnetics Corporation, National Chiao Tung UniversityInventors: Mei Li Hsieh, Shiuan Huei Lin, Jui Hsin Wang, Ken Yuh Hsu, Don Yau Chiang
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Publication number: 20090122375Abstract: In a holographic information recording and reproducing apparatus, an optical fiber guides a reference beam toward a recording medium for holographic recording, and a precision rotator is turned, so that the reference beam is incident on the recording medium at different angles and interferes with a data-carrying signal beam to complete the recording of holographic information on the recording medium. To reproduce the holographic information, the optical fiber guides a reading beam, and the reading beam is incident on the recording medium at an angle the same as the reference beam for the recording to reproduce the holographic information stored on the recording medium. With the optical fiber and the precision rotator, a simplified light path system and a wide range of incident angles for the reference and reading beams may be achieved, and the transmissive, reflective, and 90-degree holographic storage techniques may be integrated in one single apparatus.Type: ApplicationFiled: October 29, 2008Publication date: May 14, 2009Applicants: CMC Magnetics Corporation, National Chiao Tung UniversityInventors: Mei-Li Hsieh, Shiuan-Huei Lin, Jui-Hsin Wang, Ken-Yuh Hsu, Don-Yau Chiang