LAYERED OPTICAL COMPOSITE HAVING A REDUCED CONTENT OF HIGHLY REFRACTIVE LAYERS AND ITS APPLICATION IN AUGMENTED REALITY

    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

    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.

    Method for machining the edges of glass elements and glass element machined according to the method

    公开(公告)号:US10807902B2

    公开(公告)日:2020-10-20

    申请号:US16104510

    申请日:2018-08-17

    申请人: SCHOTT AG

    摘要: A method for the production of glass or glass ceramic elements from flat glass or glass ceramic parts is provided where the edges of the glass or glass ceramic elements are treated by a combination of two processes. The flat glass or glass ceramic element with an edge surface connecting the two side surfaces is produced. The edge surface has at least one first elongated, strip-shaped edge region and at least one second elongated strip-shaped edge region, which are formed by a ground edge. The edge regions extend in the longitudinal direction along the edge surface and along the side surfaces. The first edge region has elongated parallel filamentary damages that are parallel and adjacent to one another and, in particular, spaced apart equidistantly, in the longitudinal direction thereof extending transversely to the side surfaces and along the surface of the first edge region.

    METHOD FOR ASSESSING THE QUALITY OF A COMPONENT OF OPTICAL MATERIAL

    公开(公告)号:US20230087046A1

    公开(公告)日:2023-03-23

    申请号:US18057501

    申请日:2022-11-21

    申请人: SCHOTT AG

    摘要: A method and system for assessing the quality of at least one component of optical material which has at least one first center axis includes directing at least one light beam towards at least one detector device such that while changing the position and/or orientation of the component relative to the light beam, the light beam crosses at least from time to time the component and determining, with at least one determination device, at least one characterizing value of at least one figure of merit of the component based on analyzing, with at least one analyzing device, the dependency of a parameter of the light beam detected by the detector device on the position and/or orientation of the component.

    Layered optical composite having a reduced content of highly refractive layers and its application in augmented reality

    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

    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.