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公开(公告)号：US20230266515A1
公开(公告)日：2023-08-24
申请号：US18006459
申请日：2020-08-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： 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
CPC classification number: G02B5/285 , B32B27/30 , B32B2307/412 , B32B2307/42 , B32B2457/00
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.
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公开(公告)号：US20240264347A1
公开(公告)日：2024-08-08
申请号：US18567823
申请日：2021-06-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Fan Long , Bharat R. Acharya , Jaewon Kim , Jingfei Chen , Huijie Xie , Zhe Hu
CPC classification number: G02B5/26 , G01S7/03 , G01S13/931 , G02B1/04 , G02B5/208 , G02B5/3008
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.
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公开(公告)号：US11954939B2
公开(公告)日：2024-04-09
申请号：US18017151
申请日：2020-07-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jingfei Chen , Huijie Xie , Fan Long , Yan Yan Zhang , Zhe Hu
IPC: G06V40/13 , G02F1/1333 , G06V40/12 , H04M1/02
CPC classification number: G06V40/1318 , G02F1/13338 , G06V40/1324 , G06V40/1341 , H04M1/0266
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). The second axis (BB′) is inclined at an inclination angle relative to the first axis (AA′) of the cover layer (218).
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公开(公告)号：US20250035828A1
公开(公告)日：2025-01-30
申请号：US18916811
申请日：2024-10-16
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Fan Long , Bharat R. Acharya , Jaewon Kim , Jingfei Chen , Huijie Xie , Zhe Hu
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.
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公开(公告)号：US20230418079A1
公开(公告)日：2023-12-28
申请号：US18037412
申请日：2021-12-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Shine Long , Xue Mao , Jingfei Chen , Bharat R. Acharya , Huijie Xie , Zhiping Liu , Zhe Hu
CPC classification number: G02B27/022 , G06V40/1318 , G06V40/145 , G06V40/166 , G02B27/30 , G02B5/26 , G02B5/208 , G02B5/201
Abstract: A display system for imaging a user body portion includes a display panel, an optical sensor disposed on the display panel and configured to detect light reflected by the user body portion, and an optical stack disposed between the display panel and the optical sensor. The optical stack includes a first optical reflector and a light collimating film. The light collimating film includes a plurality of substantially coplanar alternating first and second regions. For an incident light, a visible wavelength range, and an infrared wavelength range, and for each of a first incident angle of less than about 5 degrees and a second incident angle of between about 40 degrees and about 70 degrees, the plurality of polymeric layers has an average optical reflectance of greater than about 70% in the visible wavelength range and an optical transmittance of greater than about 30% in the infrared wavelength range.
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Patent Agency Ranking
公开(公告)号：US20220091316A1
公开(公告)日：2022-03-24
申请号：US17309999
申请日：2019-02-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Fan Long , Huijie Xie , Jingfei Chen , Zhe Hu , John A. Wheatley , Adam D. Haag
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.
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公开(公告)号：US12147066B2
公开(公告)日：2024-11-19
申请号：US18567823
申请日：2021-06-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Fan Long , Bharat R. Acharya , Jaewon Kim , Jingfei Chen , Huijie Xie , Zhe Hu
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.
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公开(公告)号：US12153245B2
公开(公告)日：2024-11-26
申请号：US18025988
申请日：2020-09-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhe Hu , Mingxing Wang , Tuhua Chen , Zhiping Liu , Yang Liu , Xiulong Men , Hailiang Hou , Huijie Xie , Yifei Zheng , Feng Zhao , Jingfei Chen , Bharat R. Acharya , Quinn D. Sanford , Matthew S. Cole , Tao Zhang
IPC: G06V40/13 , F21V8/00 , G02B27/14 , G02F1/1333
Abstract: An optical construction (100) includes a lightguide (102), a transmissive reflector (112), and an optical sensor (114). The lightguide (102) includes a first major surface (104) and a second major surface (106) opposite to the first major surface (104). The first major surface (104) includes a first portion (108) and an adjoining second portion (110). The transmissive reflector (112) is disposed adjacent to the first major surface (104) of the lightguide (102). The optical sensor (114) is disposed adjacent to the transmissive reflector (112) opposite to the lightguide (102). The optical sensor (114) is aligned with the first portion (108) of the first major surface (104) of the lightguide (102), such that the optical sensor (114) receives at least a portion of light passing through the first portion (108) of the first major surface (104) and transmitted by the transmissive reflector (112). The optical construction (100) further includes an enclosed gap (116) disposed between the first portion (108) of the first major surface (104) of the lightguide (102) and the transmissive reflector (112).
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公开(公告)号：US20240023905A1
公开(公告)日：2024-01-25
申请号：US18266049
申请日：2021-12-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhiping Liu , Fan Long , John A. Wheatley , Bharat R. Acharya , Ryan T. Fabick , Zhe Hu , Edward J. Kivel
IPC: A61B5/00 , A61B5/117 , A61B5/1455
CPC classification number: A61B5/7445 , A61B5/0062 , A61B5/117 , A61B5/14552 , A61B5/6826 , A61B5/489 , A61B5/14558
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.
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公开(公告)号：US20230367057A1
公开(公告)日：2023-11-16
申请号：US18025988
申请日：2020-09-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhe Hu , Mingxing Wang , Tuhua Chen , Zhiping Liu , Yang Liu , Xiulong Men , Hailiang Hou , Huijie Xie , Yifei Zheng , Feng Zhao , Jingfei Chen , Bharat R. Acharya , Quinn D. Sanford , Matthew S. Cole , Tao Zhang
IPC: F21V8/00
CPC classification number: G02B6/0055 , G02B27/14
Abstract: An optical construction (100) includes a lightguide (102), a transmissive reflector (112), and an optical sensor (114). The lightguide (102) includes a first major surface (104) and a second major surface (106) opposite to the first major surface (104). The first major surface (104) includes a first portion (108) and an adjoining second portion (110). The transmissive reflector (112) is disposed adjacent to the first major surface (104) of the lightguide (102). The optical sensor (114) is disposed adjacent to the transmissive reflector (112) opposite to the lightguide (102). The optical sensor (114) is aligned with the first portion (108) of the first major surface (104) of the lightguide (102), such that the optical sensor (114) receives at least a portion of light passing through the first portion (108) of the first major surface (104) and transmitted by the transmissive reflector (112). The optical construction (100) further includes an enclosed gap (116) disposed between the first portion (108) of the first major surface (104) of the lightguide (102) and the transmissive reflector (112).
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