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20915 条记录 (耗时 0.067 秒)

    Azimuthally anisotropic polarization sensitive optical filter
    41.
    发明授权
    Azimuthally anisotropic polarization sensitive optical filter 有权

    公开(公告)号：US12066650B2

    公开(公告)日：2024-08-20

    申请号：US18319701

    申请日：2023-05-18

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Bharat R. Acharya ,  John A. Wheatley ,  Andrew J. Carlson

    IPC分类号： F21V8/00

    CPC分类号： G02B6/0056 ,  G02B6/0026 ,  G02B6/0053

    摘要： An optical construction includes an optical film between first and second prismatic films, which each include pluralities of parallel, linear first and second prisms. Each of the first and second prisms have opposing first and second sides extending from first and second ends of a base of the prism and meeting at a peak. The first and second sides make first and second base angles with the base of the prism. The peaks of the prismatic films face away from each other and the optical film. For a collimated, normally incident light, for at least a first wavelength in a first wavelength range, and for each of first and second polarization states: the optical film has an optical transmission of less than about 1%, and the optical construction transmits at least 1% of the incident light at an oblique angle greater than 5 degrees with respect to the optical film.

    Optical Stacks for Detection Systems
    44.
    发明公开
    Optical Stacks for Detection Systems 审中-公开

    公开(公告)号：US20240272334A1

    公开(公告)日：2024-08-15

    申请号：US18568323

    申请日：2022-06-28

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Kristy A. Gillette ,  Zhaohui Yang ,  Joseph P. Attard ,  Martin E. Denker

    IPC分类号： G02B3/00 ,  G02B5/02 ,  G06V40/13

    CPC分类号： G02B3/0037 ,  G02B5/02 ,  G06V40/1318

    摘要： An integral optical stack includes a lens film having first and second major surfaces. The first major surface includes microlenses having an average peak-to-valley height PV1. A light absorbing layer is disposed on the lens film and defines a plurality of openings. A substantially planarizing optically diffusive layer is disposed on the first major surface of the lens film, conforming to the microlenses. The optically diffusive layer includes a plurality of nanoparticles. A polymeric material bonds the nanoparticles to each other to form a plurality of nanoparticle aggregates defining a plurality of voids therebetween. The optically diffusive layer has an average thickness greater than about 8 microns, and an index of refraction of less than about 1.25. Any non-planarity of a major surface of the optically diffusive layer due to the microlenses of the first major surface has an average peak-to-valley height PV2, PV2≤0.7 PV1.

    Curtain rod hanger
    47.
    外观设计
    Curtain rod hanger 有权

    公开(公告)号：USD1038744S1

    公开(公告)日：2024-08-13

    申请号：US29829598

    申请日：2022-03-07

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    设计人： Mario A. Davenport

    摘要： FIG. 1 is a perspective view showing an embodiment of the new design for a curtain rod hanger;
    FIG. 2 is a front view thereof;
    FIG. 3 is a rear view thereof;
    FIG. 4 is a left side view thereof;
    FIG. 5 is a right side view thereof;
    FIG. 6 is a top view thereof; and
    FIG. 7 is a bottom view thereof;
    FIG. 8 is a perspective view showing an embodiment of the new design for a curtain rod hanger;
    FIG. 9 is a front view thereof;
    FIG. 10 is a rear view thereof;
    FIG. 11 is a left side view thereof;
    FIG. 12 is a right side view thereof;
    FIG. 13 is a top view thereof; and,
    FIG. 14 is a bottom view thereof.

    ACOUSTIC INSERT FOR EARPIECE
    49.
    发明公开
    ACOUSTIC INSERT FOR EARPIECE 审中-公开

    公开(公告)号：US20240267673A1

    公开(公告)日：2024-08-08

    申请号：US18564525

    申请日：2022-05-27

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Antoine Bernier ,  Katrin Braun ,  Bernard Daoust

    IPC分类号： H04R1/28 ,  H04R1/04 ,  H04R1/10

    CPC分类号： H04R1/288 ,  H04R1/04 ,  H04R1/1016 ,  H04R1/1075 ,  H04R1/2888 ,  H04R2400/01

    摘要： An earpiece includes a shell forming a cavity and a sound channel having a first end connected to and in communication with the cavity, and a second end opposite to the first end, the sound channel forming a single pass-through cavity extending from the first end to the second end; an insert disposed within the cavity; a speaker; a circuit board assembly mounted onto the insert, the circuit board assembly comprising a printed circuit board defining a first side and a second side, and a first microphone disposed on the first side; an acoustic chamber formed between the insert and the circuit board assembly, the first microphone being disposed within the acoustic chamber; and an acoustic channel extending from the acoustic chamber to the sound channel.