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    Apparatus for testing the strength of sheets made of hard brittle material under tensile stress
    4.
    发明授权
    Apparatus for testing the strength of sheets made of hard brittle material under tensile stress 有权

    公开(公告)号：US11181453B2

    公开(公告)日：2021-11-23

    申请号：US16740564

    申请日：2020-01-13

    Applicant: SCHOTT AG

    Inventor： Martin Lotze ,  Thomas Roßmeier ,  Clemens Ottermann ,  Volker Seibert

    IPC: G01N3/16 ,  G01N3/20 ,  G01N33/38

    Abstract: A method for testing the strength of a sheet-like element having two opposite faces and made of hard brittle material under tensile stress is provided. The method includes passing each of the faces of the element over a roller and thereby bending the element so that each of the faces is subjected to a first tensile stress in a portion in which the opposite face is in contact with a surface of the roller; exerting a second tensile force on the element in the direction of advancement so that both faces are subjected to the second tensile stress of at least 2 MPa so that the first and second tensile stresses add up to define a resultant tensile stress; and monitoring the element and determining whether the element has a defined breaking strength equal to the resultant tensile stress or whether the element breaks under the resultant tensile stress.

    APPARATUS AND METHOD FOR TESTING THE STRENGTH OF SHEETS MADE OF HARD BRITTLE MATERIAL
    5.
    发明申请
    APPARATUS AND METHOD FOR TESTING THE STRENGTH OF SHEETS MADE OF HARD BRITTLE MATERIAL 审中-公开

    公开(公告)号：US20200150012A1

    公开(公告)日：2020-05-14

    申请号：US16740564

    申请日：2020-01-13

    Applicant: SCHOTT AG

    Inventor： Martin Lotze ,  Thomas Roßmeier ,  Clemens Ottermann ,  Volker Seibert

    IPC: G01N3/20

    Abstract: A method for testing the strength of a sheet-like element having two opposite faces and made of hard brittle material under tensile stress is provided. The method includes passing each of the faces of the element over a roller and thereby bending the element so that each of the faces is subjected to a first tensile stress in a portion in which the opposite face is in contact with a surface of the roller; exerting a second tensile force on the element in the direction of advancement so that both faces are subjected to the second tensile stress of at least 2 MPa so that the first and second tensile stresses add up to define a resultant tensile stress; and monitoring the element and determining whether the element has a defined breaking strength equal to the resultant tensile stress or whether the element breaks under the resultant tensile stress.

    MIRROR AND MIRROR SUBSTRATE WITH HIGH ASPECT RATIO, AND METHOD AND MEANS FOR PRODUCING SUCH A MIRROR SUBSTRATE
    6.
    发明申请
    MIRROR AND MIRROR SUBSTRATE WITH HIGH ASPECT RATIO, AND METHOD AND MEANS FOR PRODUCING SUCH A MIRROR SUBSTRATE 审中-公开

    公开(公告)号：US20200049868A1

    公开(公告)日：2020-02-13

    申请号：US16535401

    申请日：2019-08-08

    Applicant: SCHOTT AG

    Inventor： Martin Schaefer ,  Marco Weisenburger ,  Volker Seibert ,  Thomas Westerhoff

    IPC: G02B5/10 ,  C03B19/02 ,  C03C10/00

    Abstract: A mirror, a mirror substrate, a method for producing are provided. The mirror substrate is made of a material having a coefficient of mean linear thermal expansion of less than or equal to 1*10−6/K. The mirror substrate includes at least one feature selected from a group consisting of: a ratio of a lateral dimension to a maximum thickness of at least 100, a ratio of the lateral dimension to the maximum thickness of at least 150, a ratio of the lateral dimension to the maximum thickness of at least 200, a ratio of the lateral dimension to the maximum thickness of at least 300, a weight per unit area of 100 kg/m2 or less, a weight per unit area of 50 kg/m2 or less, a weight per unit area of 30 kg/m2 or less, a weight per unit area of 15 kg/m2 or less, a mirror surface with a roughness (Ra) of at most 3.5 μm, and a mirror surface with a roughness (Ra) of less than 1.2 μm.

    SHAPED GLASS ARTICLE HAVING A PREDEFINED GEOMETRY PRODUCED WITHOUT USING A MOLD, METHOD AND USE OF THE SAME
    7.
    发明申请
    SHAPED GLASS ARTICLE HAVING A PREDEFINED GEOMETRY PRODUCED WITHOUT USING A MOLD, METHOD AND USE OF THE SAME 有权
    具有不使用模具生产的预定几何形状的玻璃制品，其方法和使用方法

    公开(公告)号：US20160031737A1

    公开(公告)日：2016-02-04

    申请号：US14815320

    申请日：2015-07-31

    Applicant: SCHOTT AG

    Inventor： Bernd Hoppe ,  Georg Haselhorst ,  Volker Seibert

    IPC: C03B23/023 ,  H05K5/03 ,  C03B23/00

    CPC classification number: C03B23/0235 ,  C03B23/0086 ,  C03B23/023 ,  C03B23/0256 ,  H05K5/03

    Abstract: The disclosure relates to a method for producing, without a mold, a shaped glass article having a predefined geometry. For this purpose a method is provided for producing a shaped glass article without using a mold, which method comprises at least the steps of: providing a starting glass; supporting the starting glass; heating a portion of the starting glass so that in this portion a predetermined spatial viscosity distribution of the starting glass is obtained from 109 to 104 dPa·s, in particular from 104 to 108 dPa·s, and so that at the points where the starting glass is supported a predetermined spatial viscosity distribution of the starting glass does not fall below 1013 dPa·s, wherein the heating is accomplished using at least one laser beam; and deforming the heated starting glass by action of an external force until the predefined geometry of the glass article is obtained, and the portion is raised or lowered with respect to the surrounding regions so that a local elevation or depression is obtained.

    Abstract translation: 本公开涉及一种在没有模具的情况下生产具有预定几何形状的成形玻璃制品的方法。 为此，提供了一种用于在不使用模具的情况下制造成形玻璃制品的方法，该方法至少包括以下步骤：提供起始玻璃; 支持起始玻璃; 加热起始玻璃的一部分，使得在该部分中起始玻璃的预定空间粘度分布从109至104dPa·s，特别是104至108dPa·s获得，并且使得在起始点 起始玻璃的预定的空间粘度分布不低于1013dPa·s，玻璃被支撑，其中使用至少一个激光束实现加热; 并且通过外力作用使加热的起始玻璃变形，直到获得玻璃制品的预定几何形状，并且该部分相对于周围区域升高或降低，从而获得局部高程或凹陷。

    SUBSTRATE FOR A MIRROR SUPPORT WITH REDUCED WEIGHT AS WELL AS MIRROR WITH REDUCED-WEIGHT MIRROR SUPPORT
    8.
    发明申请
    SUBSTRATE FOR A MIRROR SUPPORT WITH REDUCED WEIGHT AS WELL AS MIRROR WITH REDUCED-WEIGHT MIRROR SUPPORT 审中-公开
    具有降低重量的镜子支撑的底座，如具有减轻重量的镜子支撑的镜子

    公开(公告)号：US20150053836A1

    公开(公告)日：2015-02-26

    申请号：US14527995

    申请日：2014-10-30

    Applicant: SCHOTT AG

    Inventor： Martin Schaefer ,  Thorsten Doehring ,  Volker Seibert ,  Thomas Westerhoff ,  Hans-Joachim Nowak

    IPC: G02B7/182

    CPC classification number: G02B7/182 ,  G02B5/10 ,  G02B7/183 ,  Y10T428/24165 ,  Y10T428/24289 ,  Y10T428/24306 ,  Y10T428/2495

    Abstract: In a substrate, particularly in a substrate for a mirror support, in which recesses are introduced in one surface, preferably in the back side of the substrate, as a result of which, in particular, bridging pieces are defined between the recesses, in order to achieve the situation that despite a reduced weight, a high rigidity still remains, which means only a slight sagging after its correct uptake in a holding device provided for it, it is provided that at least one first portion of the bridging pieces has a width that is different than a second portion of the bridging pieces.

    Abstract translation: 在基板中，特别是在用于反射镜支撑的基板中，其中凹部被引入到一个表面中，优选地在基板的背面中被引入，结果，特别地，桥接件被定义在凹部之间，按顺序 为了实现尽管重量减轻的情况，仍然保留高刚性，这意味着在为其设置的保持装置中正确吸收之后只有轻微的下垂，条件是桥接件的至少一个第一部分具有宽度 这不同于桥接件的第二部分。

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