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1528 条记录 (耗时 0.035 秒)

    Compact heads-up display
    7.
    发明授权
    Compact heads-up display 有权

    公开(公告)号：US12025797B2

    公开(公告)日：2024-07-02

    申请号：US17414653

    申请日：2019-12-17

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Zhisheng Yun ,  Hao Wu ,  Stephen J. Willett ,  Craig R. Schardt ,  Stephan J. Pankratz ,  Gilles J. Benoit

    IPC分类号： G02B27/01 ,  G02B27/28 ,  G02F1/1335

    CPC分类号： G02B27/0101 ,  G02B27/0149 ,  G02B27/286 ,  G02F1/133536 ,  G02B2027/015

    摘要： An optical system, including a reflective polarizer, and a display and a mirror disposed on a same side of, and generally facing, the reflective polarizer. The reflective polarizer may transmit at least 80% of incident light having a first polarization state and may reflect at least 80% of incident light having a second polarization state, and the mirror may reflect at least 80% of the incident light for each of the first and second polarization states. The central locations of the display, reflective polarizer, and mirror may define a midplane which includes first, second, and third regions, such that the first region includes portions of the image rays that pass at least once across the region, the second region includes portions of the image rays that pass at least twice across the region, and the third region includes portions of the image rays that pass three times across the region. The first, second, and third regions may have respective areas A1, A2, and A3, such that A3/A2 is greater than or equal to about 0.20, or 0.22, or 0.24, or 0.26, or 0.28, or 0.30.

    Switchable mirror and display
    9.
    发明授权
    Switchable mirror and display 有权

    公开(公告)号：US11932170B2

    公开(公告)日：2024-03-19

    申请号：US17076319

    申请日：2020-10-21

    申请人： GENTEX CORPORATION

    发明人： Xiaoxu Niu ,  David J. Cammenga ,  William L. Tonar

    IPC分类号： B60R1/12 ,  B60R1/02 ,  G02F1/01 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/137

    CPC分类号： B60R1/12 ,  B60R1/02 ,  G02F1/0136 ,  G02F1/133308 ,  G02F1/133536 ,  G02F1/134309 ,  G02F1/137 ,  B60R2001/1215

    摘要： An improved device switchable between reflective and display states comprising an optical element and a display element. The optical element comprising a liquid crystal medium disposed between first and second substrates. The optical element may further comprise a first electrode, a second electrode, an absorptive polarizer, and a reflective polarizer. The first electrode and the absorptive polarizer may be disposed in a first direction relative the liquid crystal medium. Similarly, the second electrode and the reflective polarizer may be disposed in a second direction relative the liquid crystal medium. The second direction is opposite the first direction. In some embodiments, one or more of the absorptive and reflective polarizers may be further disposed between the first and second substrates. The display may be disposed in the first direction relative the optical element. Additionally, the device may further comprise a housing. In some embodiments, the housing may not have a bezel.

    Backlight for display
    10.
    发明授权
    Backlight for display 有权

    公开(公告)号：US11921373B2

    公开(公告)日：2024-03-05

    申请号：US17797480

    申请日：2021-02-01

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Kristy A. Gillette ,  Michelle L Toy ,  William Blake Kolb ,  Jonah Shaver ,  Jason S. Petaja

    IPC分类号： G02F1/13357 ,  G02F1/1335

    CPC分类号： G02F1/133605 ,  G02F1/133504 ,  G02F1/133524 ,  G02F1/133533 ,  G02F1/133536 ,  G02F1/133607

    摘要： A backlight includes an extended light source adapted to emit light. A reflective polarizer is disposed on the extended light source, such that for substantially normally incident light and for at least a first wavelength in a range from about 420 nanometer (nm) to about 650 nm, the reflective polarizer reflects at least 60% of the incident light having a first polarization state and transmits at least 60% of the incident light having an orthogonal second polarization state. A first prismatic film is disposed between the extended light source and the reflective polarizer. A retarder layer is disposed between the reflective polarizer and the first prismatic film, such that for substantially normally incident light at a wavelength of about 550 nm, the retarder layer has a retardance nW, where n is an integer ≥1 and W is a wavelength between about 160 nm and about 300 nm.