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    LAYERED OPTICAL COMPOSITE HAVING A REDUCED CONTENT OF HIGHLY REFRACTIVE LAYERS AND ITS APPLICATION IN AUGMENTED REALITY
    4.
    发明申请
    LAYERED OPTICAL COMPOSITE HAVING A REDUCED CONTENT OF HIGHLY REFRACTIVE LAYERS AND ITS APPLICATION IN AUGMENTED REALITY 有权

    公开(公告)号：US20210149090A1

    公开(公告)日：2021-05-20

    申请号：US17034595

    申请日：2020-09-28

    申请人： SCHOTT AG

    发明人： Kurt Nattermann ,  Jens Ulrich Thomas ,  Frank-Thomas Lentes ,  Thorsten Damm ,  Peter Naß

    IPC分类号： G02B5/00 ,  G02B27/01

    摘要： The present disclosure relates to a layered optical composite, in particular for use in an augmented reality device. In particular, the disclosure relates to a layered optical composite and a process for its preparation, a device comprising the layered optical composite and a process for its preparation, and the use of a layered optical composite in an augmented reality device.
    The present disclosure relates to a layered optical composite comprising: a. a substrate having a front face and a back face, b. a coating comprising: i. a type T layer, and ii. a type C region comprising one or more type C layers; in which the substrate has: i. a thickness tG in the range from 0.2 to 1.2 mm; ii. a refractive index nG at a wavelength λ in the range from 1.6 to 2.4; and iii. an optical absorption coefficient KG at the wavelength λ of less than 10 cm−1; in which the type C layers individually and independently have: i. a thickness tC in the range from 9 to 250 nm; ii. a refractive index nC at the wavelength λ in the range from 1.35 to 2.43; and iii. an optical absorption coefficient KC at the wavelength λ of less than 106 cm−1; in which at least one type C layer has: i. an optical absorption coefficient at the wavelength λ of at least 100 cm−1; in which the type T layer has: i. a thickness tT in the range from 50 to 300 nm; ii. a refractive index nT at the wavelength λ in the range from 1.35 to 1.96; and iii. an optical absorption coefficient KT of less than 80 cm−1; in which the type C region and the type T layer are each superimposed over one face of the substrate with the type C region further than the type T layer from the substrate; in which λ is in the range from 430 to 670 nm.

    DEVICE COMPRISING OPTICAL ELEMENTS OF SELECTED REFRACTIVE INDEX
    5.
    发明申请
    DEVICE COMPRISING OPTICAL ELEMENTS OF SELECTED REFRACTIVE INDEX 有权

    公开(公告)号：US20210096376A1

    公开(公告)日：2021-04-01

    申请号：US17035241

    申请日：2020-09-28

    申请人： SCHOTT AG

    发明人： Simone Monika Ritter ,  Antoine Carré ,  Peter Naß ,  Frank-Thomas Lentes

    IPC分类号： G02B27/01 ,  G06K9/00 ,  G06F3/01

    摘要： The present disclosure relates to a device, in particular an augmented reality device. In particular, the disclosure relates to a device, a kit, a process for making the device, and a process for making a visual impression.
    The present disclosure relates to a device including: a. a grouping of x optical elements, each optical element having a front face and a back face, the x optical elements being arranged in a stack from first to last in which the front face of an optical element faces the back face of the next optical element, and b. a spacer region made of a material having a refractive index below 1.4 for vacuum wavelengths in the range from 400 to 760 nm located between each pair of adjacent optical elements, and: x is an integer at least 3, the grouping of x optical elements comprises a first R-type optical element, a first G-type optical element and a first B-type optical element, R610 is the refractive index of the first R-type optical element for light of vacuum wavelength 610 nm; R760 is the refractive index of the first R-type optical element for light of vacuum wavelength 760 nm; G500 is the refractive index of the first G-type optical element for light of vacuum wavelength 500 nm; G610 is the refractive index of the first G-type optical element for light of vacuum wavelength 610 nm; B400 is the refractive index of the first B-type optical element for light of vacuum wavelength 400 nm; B500 is the refractive index of the first B-type optical element for light of vacuum wavelength 500 nm; n0 is the minimum selected from R760, G610 and B500; δ is the difference between n0 and the maximum selected from R610, G500 and B400; n0 is in the range from 1.55 to 2.50; δ is equal to or less than 0.20.

    Layered optical composite having a reduced content of highly refractive layers and its application in augmented reality
    8.
    发明授权
    Layered optical composite having a reduced content of highly refractive layers and its application in augmented reality 有权

    公开(公告)号：US11609363B2

    公开(公告)日：2023-03-21

    申请号：US17034595

    申请日：2020-09-28

    申请人： SCHOTT AG

    发明人： Kurt Nattermann ,  Jens Ulrich Thomas ,  Frank-Thomas Lentes ,  Thorsten Damm ,  Peter Naß

    IPC分类号： G02B5/00 ,  G02B27/01 ,  G02B1/115 ,  G06F3/01 ,  G06F3/02

    摘要： The present disclosure relates to a layered optical composite, in particular for use in an augmented reality device. In particular, the disclosure relates to a layered optical composite and a process for its preparation, a device comprising the layered optical composite and a process for its preparation, and the use of a layered optical composite in an augmented reality device.
    The present disclosure relates to a layered optical composite comprising: a. a substrate having a front face and a back face, b. a coating comprising: i. a type T layer, and ii. a type C region comprising one or more type C layers; in which the substrate has: i. a thickness tG in the range from 0.2 to 1.2 mm; ii. a refractive index nG at a wavelength λ in the range from 1.6 to 2.4; and iii. an optical absorption coefficient KG at the wavelength λ of less than 10 cm−1; in which the type C layers individually and independently have: i. a thickness tC in the range from 9 to 250 nm; ii. a refractive index nC at the wavelength λ in the range from 1.35 to 2.43; and iii. an optical absorption coefficient KC at the wavelength λ of less than 106 cm−1; in which at least one type C layer has: i. an optical absorption coefficient at the wavelength λ of at least 100 cm−1; in which the type T layer has: i. a thickness tT in the range from 50 to 300 nm; ii. a refractive index nT at the wavelength λ in the range from 1.35 to 1.96; and iii. an optical absorption coefficient KT of less than 80 cm−1; in which the type C region and the type T layer are each superimposed over one face of the substrate with the type C region further than the type T layer from the substrate; in which λ is in the range from 430 to 670 nm.