Patents by Inventor Fan Long

Fan Long 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).

  • Patent number: 12372697
    Abstract: An optical stack (100) includes an optical diffuser (10) and a first reflective polarizer (40) disposed on the optical diffuser (10). For substantially normally incident light and for nonoverlapping first and second wavelength ranges, the optical diffuser (10) has a first scattering rate R1 for at least one wavelength in the first wavelength range, and a second scattering rate R2 for at least one wavelength in the second wavelength range, such that R1/R2 is greater than or equal to 2. The first reflective polarizer (40) may transmit at least 40% of light for a first polarization state for each wavelength in the first wavelength range, may reflect at least 70% of light for an orthogonal second polarization state for each wavelength in the first wavelength range, and transmit at least 40% of light for each of the first and second polarization states and for each wavelength in the second wavelength range.
    Type: Grant
    Filed: February 2, 2019
    Date of Patent: July 29, 2025
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Fan Long, Huijie Xie, Jingfei Chen, Zhe Hu, John A. Wheatley, Adam D. Haag
  • Patent number: 12287085
    Abstract: A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.
    Type: Grant
    Filed: May 14, 2024
    Date of Patent: April 29, 2025
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Bharat R. Acharya, Fan Long, Edward S. Hagermoser, Jathan D. Edwards
  • Publication number: 20250044888
    Abstract: A display system includes a substrate, an optically reflecting first film defining a plurality of first openings across a length and a width of the first major surface, pluralities of visible light emitting first devices, infrared light emitting second devices, and infrared light detecting third devices disposed in the first openings of the first film and mounted on the substrate, and an optically reflecting second film disposed on the pluralities of first, second, and third devices and the optically reflecting first film opposite the substrate. For a visible wavelength range and an infrared wavelength range, the first film has an average reflectance of greater than about 60% for each of the visible and infrared wavelength ranges, and the second film has an average reflectance of greater than about 60% for the visible wavelength range and an average transmittance of greater than about 50% for the infrared wavelength range.
    Type: Application
    Filed: July 25, 2022
    Publication date: February 6, 2025
    Inventors: Fan Long, Edward S. Hagermoser, Bharat R. Acharya
  • Publication number: 20250035828
    Abstract: An optical stack includes a substrate, a radio-wave anti-reflection sheet configured to reduce reflection from the optical stack of radio waves at a predetermined operating frequency, and a visible light reflective, infrared light transmissive multilayer optical film disposed between the radio-wave anti-reflection sheet and the substrate. For radiation substantially normally incident on the radio-wave anti-reflection sheet and for a first frequency range at least 20 GHz wide, centered on the predetermined operating frequency, and disposed between about 1 GHz and about 120 GHz, a return loss of the optical stack is asymmetric about the predetermined operating frequency in the first frequency range. The optical stack has a largest return loss S11L in the first frequency range of less than ?10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.
    Type: Application
    Filed: October 16, 2024
    Publication date: January 30, 2025
    Inventors: Fan Long, Bharat R. Acharya, Jaewon Kim, Jingfei Chen, Huijie Xie, Zhe Hu
  • Patent number: 12147066
    Abstract: An optical stack (100) includes a substrate (110), a radio-wave anti-reflection sheet (130) configured to reduce reflection from the optical stack (100) of radio waves at a predetermined operating frequency (f), and a visible light reflective, infrared light transmissive multilayer optical film (120) disposed between the radio-wave anti-reflection sheet (130) and the substrate (110). For radiation substantially normally incident on the radio-wave anti-reflection sheet (130) and for a first frequency range at least 20 GHZ wide, centered on the predetermined operating frequency (f), and disposed between about 1 GHZ and about 120 GHZ, a return loss of the optical stack (100) is asymmetric about the predetermined operating frequency (f) in the first frequency range. The optical stack (100) has a largest return loss S11L in the first frequency range of less than ?10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: November 19, 2024
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Fan Long, Bharat R. Acharya, Jaewon Kim, Jingfei Chen, Huijie Xie, Zhe Hu
  • Patent number: 12099522
    Abstract: The method includes: performing blockchain storage area allocation for transaction broadcast data; establishing a peer-to-peer transmission mechanism and a trust mechanism between nodes by the blockchain; acquiring network transaction broadcast data that needs to be subjected to blockchain storage; and recording, storing and managing the network transaction broadcast data; where the network transaction broadcast data is managed by dividing blockchain data into hot data and cold data; the hot data is stored in each of the blockchain nodes; and the cold data is divided into N parts to be correspondingly stored in N nodes of the blockchain nodes; and the hot data is data that needs to be frequently accessed by computing nodes, and the cold data is data that is infrequently accessed.
    Type: Grant
    Filed: January 6, 2023
    Date of Patent: September 24, 2024
    Assignee: Shanghai Tree-Graph Blockchain Institute
    Inventors: Guang Yang, Chenxing Li, Fengyu Zhang, Ming Wu, Fan Long, Peilun Li
  • Publication number: 20240295304
    Abstract: A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.
    Type: Application
    Filed: May 14, 2024
    Publication date: September 5, 2024
    Inventors: Bharat R. Acharya, Fan Long, Edward S. Hagermoser, Jathan D. Edwards
  • Publication number: 20240264347
    Abstract: An optical stack (100) includes a substrate (110), a radio-wave anti-reflection sheet (130) configured to reduce reflection from the optical stack (100) of radio waves at a predetermined operating frequency (f), and a visible light reflective, infrared light transmissive multilayer optical film (120) disposed between the radio-wave anti-reflection sheet (130) and the substrate (110). For N radiation substantially normally incident on the radio-wave anti-reflection sheet (130) and for a first frequency range at least 20 GHz wide, centered on the predetermined operating frequency (f), and disposed between about 1 GHz and about 120 GHz, a return loss of the optical stack (100) is asymmetric about the predetermined operating frequency (f) in the first frequency range. The optical stack (100) has a largest return loss S11L in the first frequency range of less than ?10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.
    Type: Application
    Filed: June 28, 2021
    Publication date: August 8, 2024
    Inventors: Fan Long, Bharat R. Acharya, Jaewon Kim, Jingfei Chen, Huijie Xie, Zhe Hu
  • Patent number: 12013113
    Abstract: A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: June 18, 2024
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Bharat R. Acharya, Fan Long, Edward S. Hagermoser, Jathan D. Edwards
  • Patent number: 11954939
    Abstract: An electronic device (200) includes a liquid crystal display (LCD) panel (204), a cover layer (218), one or more light sources (224), and an optical sensor module (226). The LCD panel (204) receives a contact input associated with a fingerprint of a user. The cover layer (218) includes a first major surface (228) and a second major surface (230) opposite to the first major surface (228), and is disposed on the LCD panel (204). The cover layer (218) defines a first axis (AA?) normal to the first major surface (228). The optical sensor module (226) receives a light from the predetermined fingerprint sensing area (222) to detect the fingerprint. The optical sensor module (226) at least partially overlaps with the predetermined fingerprint sensing area (222) along the plane of the first major surface (228). The optical sensor module (226) defines a second axis (BB?) normal to a surface of the optical sensor module (226).
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: April 9, 2024
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Jingfei Chen, Huijie Xie, Fan Long, Yan Yan Zhang, Zhe Hu
  • Publication number: 20240023905
    Abstract: A display system for sensing a user body portion, including a display panel configured to form an image for viewing by the user, an optical reflector having a plurality of polymeric layers, and at least one optical sensor for sensing a visible light having at least one visible wavelength and an infrared light having at least one infrared wavelength. The optical sensor senses the visible and infrared lights after the visible and infrared lights are transmitted by the optical reflector. The optical reflector has an average optical reflectance greater than 80% in the visible wavelength range, an optical transmittance greater than about 50% at the infrared wavelength, an optical transmittance of greater than about 2% and less than about 10% at the visible wavelength, and an optical transmittance versus wavelength with a bandpass segment having a full width at half maximum that includes the visible wavelength.
    Type: Application
    Filed: December 15, 2021
    Publication date: January 25, 2024
    Inventors: Zhiping Liu, Fan Long, John A. Wheatley, Bharat R. Acharya, Ryan T. Fabick, Zhe Hu, Edward J. Kivel
  • Publication number: 20230267761
    Abstract: An electronic device (200) includes a liquid crystal display (LCD) panel (204), a cover layer (218), one or more light sources (224), and an optical sensor module (226). The LCD panel (204) receives a contact input associated with a fingerprint of a user. The cover layer (218) includes a first major surface (228) and a second major surface (230) opposite to the first major surface (228), and is disposed on the LCD panel (204). The cover layer (218) defines a first axis (AA?) normal to the first major surface (228). The optical sensor module (226) receives a light from the predetermined fingerprint sensing area (222) to detect the fingerprint. The optical sensor module (226) at least partially overlaps with the predetermined fingerprint sensing area (222) along the plane of the first major surface (228). The optical sensor module (226) defines a second axis (BB?) normal to a surface of the optical sensor module (226).
    Type: Application
    Filed: July 23, 2020
    Publication date: August 24, 2023
    Inventors: Jingfei Chen, Huijie Xie, Fan Long, Yan Yan Zhang, Zhe Hu
  • Publication number: 20230266515
    Abstract: A housing (185) for an electronic device (170) includes an optical film (100) having an optical transmittance for substantially normally incident light having a band edge separating first and second wavelength ranges, where the first wavelength range extends from about 400 nm to about 700 nm and the second wavelength range is at least about 100 nm wide and disposed between about 800 nm and about 1100 nm. For substantially normally incident light, an average optical reflectance of the optical film is greater than about 90% in the first wavelength range, and an average optical transmittance of the optical film is greater than about 80% in the second wavelength range. For at least one frequency in a range of about 0.1 GHz to about 90 GHz and for substantially normally incident radiation, the optical film transmits at least about 95% of the incident radiation.
    Type: Application
    Filed: August 7, 2020
    Publication date: August 24, 2023
    Inventors: Fan Long, Bharat R. Acharya, Jing Fei Chen, Huijie Xie, Zhe Hu, Bradley L. Givot, Carl A. Stover, Lin Zhao, Gilles J. Benoit, Robert D. Taylor
  • Publication number: 20230250937
    Abstract: A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.
    Type: Application
    Filed: January 30, 2023
    Publication date: August 10, 2023
    Inventors: Bharat R. Acharya, Fan Long, Edward S. Hagermoser, Jathan D. Edwards
  • Publication number: 20230141175
    Abstract: The method includes: performing blockchain storage area allocation for transaction broadcast data; establishing a peer-to-peer transmission mechanism and a trust mechanism between nodes by the blockchain; acquiring network transaction broadcast data that needs to be subjected to blockchain storage; and recording, storing and managing the network transaction broadcast data; where the network transaction broadcast data is managed by dividing blockchain data into hot data and cold data; the hot data is stored in each of the blockchain nodes; and the cold data is divided into N parts to be correspondingly stored in N nodes of the blockchain nodes; and the hot data is data that needs to be frequently accessed by computing nodes, and the cold data is data that is infrequently accessed.
    Type: Application
    Filed: January 6, 2023
    Publication date: May 11, 2023
    Inventors: Guang YANG, Chenxing LI, Fengyu ZHANG, Ming WU, Fan LONG, Peilun LI
  • Patent number: 11631178
    Abstract: The present disclosure may provide a method for perfusion analysis. The method may include: obtaining a plurality of scan images corresponding to a plurality of time points; obtaining a plurality of time-density discrete points based on the plurality of scan images; determining an initial time-density curve based on the plurality of time-density discrete points, the initial time-density curve indicating a density variation of a contrast agent in an organ or tissue over time, the organ or tissue corresponding to a pixel or voxel in the plurality of scan images; obtaining a first perfusion model; determining a first perfusion parameter based on the first perfusion model and the initial time-density curve; obtaining a second perfusion model; and determining a second perfusion parameter based on the second perfusion model and the first perfusion parameter.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: April 18, 2023
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Fan Long, Jieyan Ma
  • Publication number: 20230063818
    Abstract: A display system includes visible light-emitting first devices and infrared light-emitting second devices, infrared light-detecting third devices, an optically reflecting first film between the third devices and the first and second devices, and an optically reflecting second film between the first film and third devices. The optically reflecting second film defines first openings aligned with the third devices in a one-to-one correspondence. The first devices emit a first wavelength in a visible wavelength range, and the second devices are configured to emit a second wavelength in an infrared wavelength range. The third devices are configured to detect the second wavelength. The first film has an average reflectance of greater than 60% for the visible wavelength range, and an average transmittance of greater than 50% for the infrared wavelength range. The second film has an average reflectance of greater than 60% for the visible and infrared wavelength ranges.
    Type: Application
    Filed: August 17, 2022
    Publication date: March 2, 2023
    Inventors: Bharat R. Acharya, Edward Scott Hagermoser, Fan Long
  • Patent number: 11507543
    Abstract: An permissionless blockchain consensus method with adjusting block weight, comprising: setting weights of all blocks in the permissionless blockchain to the same initial value; determining parent edges(forward reference-edges) of any one of blocks in the permissionless blockchain according to the blockchain topology; detecting whether a first judgment block x is in blocks contained by the parent edge of a block b; if yes, determining that the block b is an unstable block and transferring to next step, otherwise, determining the block b is a stable block and transferring to a pivot chain consensus step; and detecting whether a second judgment blocky is in the stable block contained by the parent edge of the block b; if yes, determining the block b is a readjusted block and transferring to a weight adjustment step, otherwise, determining the block b is a stable block and transferring to the pivot chain consensus step.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: November 22, 2022
    Assignee: Shanghai Tree-Graph Blockchain Research Institute
    Inventors: Shu Shang, Chenxing Li, Peilun Li, Zhe Yang, Guang Yang, Dong Zhou, Ming Wu, Fan Long
  • Patent number: 11349824
    Abstract: The present invention relates to a block sequencing method based on a tree-graph structure, comprising of: linking all blocks into a tree-graph structure according to reference relationships; selecting one pivot chain from the tree-graph structure and taking all blocks in the pivot chain as pivot blocks; dividing all blocks into a plurality of Epochs according to a time sequence arrangement of the pivot blocks; sorting the blocks in the Epoch to obtain a set sequence of the Epoch in time sequence; and obtaining a global sequence of all blocks of the tree-graph structure based on all set sequences. The present invention also relates to a block sequencing system based on the tree-graph structure, a data processing terminal for sequencing blocks by the block sequencing method, and a P2P network using the data processing terminal.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 31, 2022
    Assignee: Shanghai Tree-Graph Blockchain Research Institute
    Inventors: Chenxing Li, Peilun Li, Zhe Yang, Guang Yang, Dong Zhou, Ming Wu, Fan Long, Shang Shu
  • Publication number: 20220091316
    Abstract: An optical stack (100) includes an optical diffuser (10) and a first reflective polarizer (40) disposed on the optical diffuser (10). For substantially normally incident light and for nonoverlapping first and second wavelength ranges, the optical diffuser (10) has a first scattering rate R1 for at least one wavelength in the first wavelength range, and a second scattering rate R2 for at least one wavelength in the second wavelength range, such that R1/R2 is greater than or equal to 2. The first reflective polarizer (40) may transmit at least 40% of light for a first polarization state for each wavelength in the first wavelength range, may reflect at least 70% of light for an orthogonal second polarization state for each wavelength in the first wavelength range, and transmit at least 40% of light for each of the first and second polarization states and for each wavelength in the second wavelength range.
    Type: Application
    Filed: February 2, 2019
    Publication date: March 24, 2022
    Inventors: Fan Long, Huijie Xie, Jingfei Chen, Zhe Hu, John A. Wheatley, Adam D. Haag