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公开(公告)号：US11885999B2
公开(公告)日：2024-01-30
申请号：US17996676
申请日：2021-05-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Bharat R. Acharya , Robert D. Taylor , Joseph P. Attard , Benjamin J. Forsythe , David T. Yust , Matthew E. Sousa , Jason S. Petaja , Anthony M. Renstrom , William Blake Kolb , Matthew S. Cole , Matthew S. Stay , Matthew R.D. Smith , Jeremy O. Swanson , Tri D. Pham , David A. Rosen , Qunyi Chen , Lisa A. DeNicola , Quinn D. Sanford , Carl A. Stover , Lin Zhao , Gilles J. Benoit
CPC classification number: G02B6/0056 , G02B6/0051 , G06V40/1318
Abstract: An optical construction includes a reflective polarizer and an optically diffusive film disposed on the reflective polarizer. The reflective polarizer includes an outer layer including a plurality of first particles partially protruding from a first major surface thereof to form a structured major surface. A first optically diffusive layer is conformably disposed on the structured major surface. The optically diffusive film includes a second optically diffusive layer including a plurality of nanoparticles dispersed therein, and a structured layer including a structured major surface. For a substantially normally incident light and a visible wavelength range from about 450 nm to about 650 nm and an infrared wavelength range from about 930 nm to about 970 nm, the second optically diffusive layer has an average specular transmittance Vs in the visible wavelength range and an average specular transmittance Is in the infrared wavelength range, where Is/Vs≥2.5.
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公开(公告)号：US11880104B2
公开(公告)日：2024-01-23
申请号：US18247209
申请日：2021-09-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Carl A Stover , Robert D. Taylor , Bharat R. Acharya
IPC: G02F1/1335 , G06V10/143 , G02F1/1333
CPC classification number: G02F1/133536 , G02F1/13338 , G06V10/143
Abstract: A reflective polarizer has a transmittance for a first polarization state having a band edge separating a first wavelength range extending at least from about 450 nm to about 900 nm and a second wavelength range extending at least from about 1100 nm to about 1300 nm. For the first polarization state, the reflective polarizer has an average transmittance in the first wavelength range less than about 10% and an average transmittance in the second wavelength range greater than about 80%; and for a second polarization state, the reflective polarizer has an average transmittance in the first wavelength range greater than about 40% and an average transmittance in the second wavelength range greater than about 80%. A display system includes the reflective polarizer and an infrared light source configured to emit an infrared light having a wavelength W1. The band edge has a band edge wavelength W2>W1.
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公开(公告)号：US20230393054A1
公开(公告)日：2023-12-07
申请号：US18245271
申请日：2021-09-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： John A. Wheatley , William Gray , Bharat R. Acharya , Aaron M. Marcella , Stephen M. Kennedy , Brett J. Sitter , Micheal L. Steiner , Mark A. Roehrig , Jonah Shaver , Jessica E. DeMay
CPC classification number: G01N21/031 , G01N21/253 , G01N2021/0314 , G01N2201/0636 , G01N2201/0683
Abstract: A measurement system is disclosed and includes a light source, a receiver, a measurement subject, and a reflector. The reflector is disposed on an opposite side of the measurement subject than are the light source and the receiver.
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公开(公告)号：US11828972B2
公开(公告)日：2023-11-28
申请号：US17639025
申请日：2020-10-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tao Liu , Gary T. Boyd , David A. Rosen , Bharat R. Acharya , Kevin W. Gotrik , David J. Rowe , Caleb T. Nelson
IPC: F21V8/00 , G02B5/02 , G02F1/1333 , G02F1/1335
CPC classification number: G02B6/0053 , G02B5/0231 , G02B5/0278 , G02B6/0031 , G02B6/0051 , G02B6/0055 , G02F1/13338 , G02F1/133528
Abstract: An optical system includes an extended illumination source configured to emit light from an extended emission surface thereof and a light redirecting layer disposed on the extended emission surface. The light redirecting layer has a structured major surface that includes a regular array of light redirecting structures, each light redirecting structure including a plurality of facets; and a plurality of discrete spaced apart window segments. The optical system includes a plurality of reflective segments where each reflective segment is disposed on a corresponding window segment. For substantially normally incident light, each reflective segment has a total: average optical reflectance of at least 30% in a visible wavelength range extending from about 420 nm to about 650 nm; and optical transmittance of at least 10% for at least one infrared wavelength in an infrared wavelength range extending from about 800 nm to about 1200 nm.
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公开(公告)号：US20230350107A1
公开(公告)日：2023-11-02
申请号：US18303276
申请日：2023-04-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kevin W. Gotrik , Stephen J. Etzkorn , Nicholas A. Johnson , Tao Liu , John J. Sullivan , Bharat R. Acharya
CPC classification number: G02B5/003 , G02F1/153 , G02B2207/123
Abstract: A light control film includes a plurality of substantially parallel optical cavities. Each of the optical cavities has a height H along a thickness direction of the light control film and a minimum lateral dimension W along an in-plane width direction orthogonal to the thickness direction, where H≥W. The optical cavities are substantially filled with a liquid including a plurality of light absorbing particles configured to move along the thickness direction in response to one or more applied signals or fields such that the movement along the thickness direction causes each of the optical cavities to transition between a substantially opaque state and a substantially transparent state. A full viewing angle of the light control film increases when the optical cavities transition from the substantially opaque state to the substantially transparent state.
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Patent Agency Ranking
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：US20230214062A1
公开(公告)日：2023-07-06
申请号：US17996583
申请日：2021-05-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Bharat R. Acharya , Robert D. Taylor , Joseph P. Attard , Benjamin J. Forsythe , David T. Yust , Matthew E. Sousa , Jason S. Petaja , Anthony M. Renstrom , William Blake Kolb , Matthew S. Cole , Matthew S. Stay , Matthew R.D. Smith , Jeremy O. Swanson , Tri D. Pham , David A. Rosen , Qunyi Chen , Lisa A. DeNicola , Quinn D. Sanford , Carl A. Stover , Lin Zhao , Gilles J. Benoit
CPC classification number: G06F3/0421 , G02B5/305 , G02B5/0226 , G02B6/0051
Abstract: A display system for sensing a finger of a user applied to the display system includes a display panel; a sensor for sensing the finger; a sensing light source configured to emit a first light having a first wavelength W1; and a reflective polarizer disposed between the display panel and the sensor. For a substantially normally incident light, an optical transmittance of the reflective polarizer versus wavelength for a first polarization state has a band edge such that for a first wavelength range extending from a smaller wavelength L1 to a greater wavelength L2 and including W1, where 30 mn≤L2−L1≤50 nm and L1 is greater than and within about 20 nm of a wavelength L3 corresponding to an optical transmittance of about 50% along the band edge, the optical transmittance has an average of greater than about 75%.
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公开(公告)号：US20220354032A1
公开(公告)日：2022-11-03
申请号：US17607991
申请日：2020-05-08
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael S. Graff , Derek J. Dehn , Paul T. Hines , Charles L. Bruzzone , Bharat R. Acharya , Ronald D. Jesme , William J. Kopecky , Jennifer J. Sokol , Sergei A. Manuilov
Abstract: A magnetic shielding film includes opposing first and second major surfaces and a plurality of particles dispersed therebetween, each particle having a magnetic permeability, a thickness H along a thickness direction of the particle, and a longest dimension L along a length direction of the particle orthogonal to the thickness direction, L/H greater than or equal to 2, the particles defining a plurality of voids therebetween, the length directions of at least 60% of the particles oriented within 5.5 degrees of a same orientation direction.
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公开(公告)号：US20220213288A1
公开(公告)日：2022-07-07
申请号：US17595091
申请日：2020-05-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Derek J. Dehn , Sebastian Goris , Paul T. Hines , Clinton P. Waller, Jr. , Mario A. Perez , Bharat R. Acharya , Brandon A. Bartling
Abstract: (Co)polymer matrix composites including a porous (co)polymeric network; a multiplicity of thermally-conductive particles, a multiplicity of intumescent particles and optionally a multiplicity of endothermic particles distributed within the (co)polymeric network structure; wherein the thermally-conductive particles, intumescent particles and optional endothermic particles are present in a range from 15 to 99 weight percent, based on the total weight of the particles and the (co)polymer (excluding the solvent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 50% over its initial volume when exposed to at least one temperature greater than 135° C. when exposed to at least one temperature greater than 135° C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, thermally-initiated fuses, and fire-stop devices.
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公开(公告)号：US20220186030A1
公开(公告)日：2022-06-16
申请号：US17595071
申请日：2020-05-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Sebastian Goris , Derek J. Dehn , Paul T. Hines , Clinton P. Waller, Jr. , Mario A. Perez , Bharat R. Acharya , Ronald W. Ausen
Abstract: (Co)polymer matrix composites including a porous (co)polymeric network; a nonvolatile diluent, and a multiplicity of thermally-conductive particles distributed within the (co)polymeric network; wherein the thermally-conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the (co)polymer matrix (including the thermally-conductive particles and the nonvolatile diluent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 10% of its initial volume when exposed to a temperature of at least 135° C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, as fillers, thermal interface materials, and thermal management materials, for example, in electronic devices, more particularly mobile handheld electronic devices, power supplies, and batteries.
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