Patents by Inventor Pin-Chieh WU
Pin-Chieh WU 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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Patent number: 11686885Abstract: Compound eyes of insects are great optical system for imaging and sensing by the nature creator, which is an unsurpassed challenge due to its precision and small size. Here, we use meta-lens consisting of GaN nano-antenna to open the fascinating doorway to full-color achromatic light field imaging and sensing. A 60×60 multi-channels meta-lens array is used for effectively capturing multi-dimensional optical information including image and depth. Based on this, the multi-dimensional light field imaging and sensing of a moving object is capable to be experimentally implemented. Our system presents a diffraction-limit resolution of 1.95 micrometer via observing the standard resolution test chart under white light illumination. This is the first mimic optical light field imaging and sensing system of insect compound eye, which has potential applications in micro robotic vision, non-men vehicle sensing, virtual and augmented reality, etc.Type: GrantFiled: December 19, 2019Date of Patent: June 27, 2023Assignee: ACADEMIA SINICAInventors: Din-Ping Tsai, Cheng-Hung Chu, Ren-Jie Lin, Mu-Ku Chen, Pin-Chieh Wu
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Patent number: 11662504Abstract: Electrically tunable metasurfaces including an array of subwavelength metasurface unit elements are presented. The unit elements include a stacked metal-insulator-metal structure within which an active phase change layer is included. A purely insulator, metal, or coexisting metal-insulator phase of the active layer can be electrically controlled to tune an amplitude and phase response of the metasurfaces. In combination with the subwavelengths dimensions of the unit elements, the phase and amplitude response can be controlled in a range from optical wavelengths to millimeter wavelength of incident light. Electrical control of the unit elements can be provided via resistive heating produced by flow of current though a top metal layer of the unit elements. Alternatively, electrical control of the unit elements can be provided via electrical field effect produced by applying a voltage differential between the top and bottom metal layers of the unit elements.Type: GrantFiled: January 10, 2020Date of Patent: May 30, 2023Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Yonghwi Kim, Pin Chieh Wu, Ruzan Sokhoyan, Kelly W Mauser, Rebecca D Glaudell, Ghazaleh Kafaie Shirmanesh, Harry A Atwater
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Patent number: 11108213Abstract: A light modulation element according to example embodiments includes a substrate; a first lower DBR layer on the substrate including a first material layer alternately stacked with a second material layer having a different refractive index from the first material layer; a second lower DBR layer on the first lower DBR layer with a surface area less than the first lower DBR layer and including a third material layer alternately stacked with a fourth material layer having a different refractive index from the third material layer; an active layer on the second lower DBR layer, including a semiconductor material having a multi-quantum well structure and having a refractive index that varies according to an applied voltage; and an upper DBR layer on the active layer including a fifth material layer alternately stacked with a sixth material layer having a different refractive index from the fifth material layer.Type: GrantFiled: February 28, 2020Date of Patent: August 31, 2021Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Duhyun Lee, Muhammad Alam, Ghazaleh Kafaie Shirmanesh, Harry Atwater, Pin Chieh Wu, Ragip Pala
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Patent number: 11086051Abstract: The present invention provides an optical component comprising a dielectric layer and a nanorod array; the nanorod array is formed on a surface of the dielectric layer and extends along a lateral direction and a vertical direction. The nanorod array comprises a plurality of nanorods extending along the dielectric layer. The nanorods have a gap between one another, and an angle is defined by two adjacent nanorods. A bump is formed at each of two ends of the nanorod.Type: GrantFiled: May 19, 2017Date of Patent: August 10, 2021Assignee: ACADEMIA SINICAInventors: Din-Ping Tsai, Pin-Chieh Wu
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Patent number: 11079520Abstract: In this disclosure, an optical component which comprises an array of metalenses is provided. Each metalens comprises a plurality of nanostructures and a dielectric layer and the nanostructures are disposed on the dielectric layer, and the nanostructures comprises an array of first phase compensation structures, and an array of second phase compensation structures. The array of the first phase compensation structures are disposed to surround the array of the second phase compensation structures so as to define a single metalens. The first and second phase compensation structures are complementary to each other and substantially satisfy the Babinet's principle.Type: GrantFiled: December 24, 2018Date of Patent: August 3, 2021Assignee: Academia SinicaInventors: Din-Ping Tsai, Pin-Chieh Wu
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Patent number: 10802301Abstract: The optical response of a metasurface is controlled by actuating it via an electrical or magnetic field, temperature control, optical pumping or electromechanical actuation. The metasurface will therefore control the polarization of the incident light. The metasurface comprises an array of patch antennas. The patch antennas are in the form of asymmetrical elements, including rotated rods, cross-shapes, V-shapes, and L-shapes.Type: GrantFiled: September 7, 2018Date of Patent: October 13, 2020Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Pin Chieh Wu, Ruzan Sokhoyan, Ghazaleh Kafaie Shirmanesh, Harry A. Atwater
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Publication number: 20200280174Abstract: A light modulation element according to example embodiments includes a substrate; a first lower DBR layer on the substrate including a first material layer alternately stacked with a second material layer having a different refractive index from the first material layer; a second lower DBR layer on the first lower DBR layer with a surface area less than the first lower DBR layer and including a third material layer alternately stacked with a fourth material layer having a different refractive index from the third material layer; an active layer on the second lower DBR layer, including a semiconductor material having a multi-quantum well structure and having a refractive index that varies according to an applied voltage; and an upper DBR layer on the active layer including a fifth material layer alternately stacked with a sixth material layer having a different refractive index from the fifth material layer.Type: ApplicationFiled: February 28, 2020Publication date: September 3, 2020Applicants: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Duhyun LEE, Muhammad ALAM, Ghazaleh KAFAIE SHIRMANESH, Harry ATWATER, Pin Chieh WU, Ragip PALA
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Publication number: 20200227632Abstract: Electrically tunable metasurfaces including an array of subwavelength metasurface unit elements are presented. The unit elements include a stacked metal-insulator-metal structure within which an active phase change layer is included. A purely insulator, metal, or coexisting metal-insulator phase of the active layer can be electrically controlled to tune an amplitude and phase response of the metasurfaces. In combination with the subwavelengths dimensions of the unit elements, the phase and amplitude response can be controlled in a range from optical wavelengths to millimeter wavelength of incident light. Electrical control of the unit elements can be provided via resistive heating produced by flow of current though a top metal layer of the unit elements. Alternatively, electrical control of the unit elements can be provided via electrical field effect produced by applying a voltage differential between the top and bottom metal layers of the unit elements.Type: ApplicationFiled: January 10, 2020Publication date: July 16, 2020Inventors: Yonghwi Kim, Pin Chieh Wu, Ruzan Sokhoyan, Kelly W. Mauser, Rebecca D. Glaudell, Ghazaleh Kafaie Shirmanesh, Harry A. Atwater
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Publication number: 20200225386Abstract: Compound eyes of insects are great optical system for imaging and sensing by the nature creator, which is an unsurpassed challenge due to its precision and small size. Here, we use meta-lens consisting of GaN nano-antenna to open the fascinating doorway to full-color achromatic light field imaging and sensing. A 60×60 multi-channels meta-lens array is used for effectively capturing multi-dimensional optical information including image and depth. Based on this, the multi-dimensional light field imaging and sensing of a moving object is capable to be experimentally implemented. Our system presents a diffraction-limit resolution of 1.95 micrometer via observing the standard resolution test chart under white light illumination. This is the first mimic optical light field imaging and sensing system of insect compound eye, which has potential applications in micro robotic vision, non-men vehicle sensing, virtual and augmented reality, etc.Type: ApplicationFiled: December 19, 2019Publication date: July 16, 2020Inventors: Din-Ping TSAI, Cheng-Hung CHU, Ren-Jie LIN, Mu-Ku CHEN, Pin-Chieh WU
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Publication number: 20190196068Abstract: In this disclosure, an optical component which comprises an array of metalenses is provided. Each metalens comprises a plurality of nanostructures and a dielectric layer and the nanostructures are disposed on the dielectric layer, and the nanostructures comprises an array of first phase compensation structures, and an array of second phase compensation structures. The array of the first phase compensation structures are disposed to surround the array of the second phase compensation structures so as to define a single metalens. The first and second phase compensation structures are complementary to each other and substantially satisfy the Babinet's principle.Type: ApplicationFiled: December 24, 2018Publication date: June 27, 2019Inventors: Din-Ping TSAI, Pin-Chieh WU
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Publication number: 20190079321Abstract: The optical response of a metasurface is controlled by actuating it via an electrical or magnetic field, temperature control, optical pumping or electromechanical actuation. The metasurface will therefore control the polarization of the incident light. The metasurface comprises an array of patch antennas. The patch antennas are in the form of asymmetrical elements, including rotated rods, cross-shapes, V-shapes, and L-shapes.Type: ApplicationFiled: September 7, 2018Publication date: March 14, 2019Inventors: Pin Chieh WU, Ruzan SOKHOYAN, Ghazaleh KAFAIE SHIRMANESH, Harry A. ATWATER
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Publication number: 20180156949Abstract: The present invention provides an optical component comprising a dielectric layer and a nanorod array; the nanorod array is formed on a surface of the dielectric layer and extends along a lateral direction and a vertical direction. The nanorod array comprises a plurality of nanorods extending along the dielectric layer. The nanorods have a gap between one another, and an angle is defined by two adjacent nanorods. A bump is formed at each of two ends of the nanorod.Type: ApplicationFiled: May 19, 2017Publication date: June 7, 2018Applicant: Academia SinicaInventors: Din-Ping TSAI, Pin-Chieh WU