公开(公告)号：US20220204382A1

公开(公告)日：2022-06-30

申请号：US17698250

申请日：2022-03-18

Applicant: SCHOTT AG

Inventor： Michael Meister ,  Katharina Alt ,  Volker Seibert ,  Ulrich Lange ,  Stephan Corvers

IPC: C03B23/035

Abstract: The present disclosure relates to a thin glass for an optical component that includes a first side with a first surface and a second side opposite the first side with a second surface. The thin glass has a three-dimensional shape with at least one target curvature and a thickness of less than 700 μm. On at least one first measurement area of 3×3 mm2 of the first surface, all surface structure components in a wavelength range of 0.1 mm to 1 mm have an arithmetical mean height Sa of below 30 nm, below 20 nm, below 10 nm, or below 8 nm. On the first measurement area, all surface structure components in a wavelength range from 0.1 mm to 1 mm can have an arithmetical mean height Sa of between 1 nm and 30 nm, between 3 nm and 20 nm, or between 6 nm and 10 nm. The values for the arithmetical mean height refer to a measurement by means of white light interferometry, with a bandpass filtering of 0.1 mm to 1 mm, i.e. with a bandpass filtering for viewing surface structure components in wavelength ranges from 0.1 mm to 1 mm.

公开(公告)号：US11890844B2

公开(公告)日：2024-02-06

申请号：US16450692

申请日：2019-06-24

Applicant: SCHOTT AG

Inventor： Armin Vogl ,  Thomas Schmiady ,  Thilo Zachau ,  Jochen Alkemper ,  Michael Meister ,  Christian Kunert ,  Lutz Klippe ,  Rüdiger Dietrich

IPC: C03C3/083 ,  C03B17/06 ,  C03B18/02 ,  C03C3/087 ,  C03C21/00 ,  C03C3/093 ,  B32B3/26 ,  B32B17/10 ,  B32B3/30 ,  C03B23/023 ,  B32B3/02

CPC classification number: B32B3/263 ,  B32B3/02 ,  B32B3/26 ,  B32B3/30 ,  B32B17/10036 ,  B32B17/10045 ,  B32B17/10119 ,  B32B17/10137 ,  C03B17/064 ,  C03B18/02 ,  C03B23/023 ,  C03C3/083 ,  C03C3/087 ,  C03C3/093 ,  C03C21/002 ,  B32B2315/08 ,  B32B2329/04 ,  B32B2329/06 ,  B32B2551/00 ,  B32B2571/00 ,  B32B2605/006 ,  Y10T428/24777

Abstract: A thin glass substrate, as well as a method and an apparatus are provided. The glass substrate has a glass having first and second main surfaces and elongated elevations on one of the main surfaces. The elevations rise in a normal direction, have a longitudinal extent that is greater than two times a transverse extent, and have a height, on average, that is less than 100 nm, and with a transverse extent of the elevation smaller than 40 mm. The method includes melting a glass, hot forming the glass, and adjusting a viscosity of the glass so that for the viscosity η1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component and y1 indicating a second distance to a location immediately downstream the flow rate control component the equation lg η1(y1)/dPa·s=(lg η01/dPa·s+a1(y1)) applies.

公开(公告)号：US12005687B2

公开(公告)日：2024-06-11

申请号：US18171925

申请日：2023-02-21

Applicant: SCHOTT AG

Inventor： Armin Vogl ,  Thomas Schmiady ,  Thilo Zachau ,  Jochen Alkemper ,  Michael Meister ,  Christian Kunert ,  Lutz Klippe ,  Rüdiger Dietrich

IPC: B32B3/26 ,  B32B3/02 ,  B32B3/30 ,  B32B17/00 ,  B32B17/10 ,  C03B17/06 ,  C03B18/02 ,  C03B23/023 ,  C03C3/04 ,  C03C3/083 ,  C03C3/087 ,  C03C3/093 ,  C03C21/00

CPC classification number: B32B3/263 ,  B32B3/02 ,  B32B3/26 ,  B32B3/30 ,  B32B17/10036 ,  B32B17/10045 ,  B32B17/10119 ,  B32B17/10137 ,  C03B17/064 ,  C03B18/02 ,  C03B23/023 ,  C03C3/083 ,  C03C3/087 ,  C03C3/093 ,  C03C21/002 ,  B32B2315/08 ,  B32B2329/04 ,  B32B2329/06 ,  B32B2551/00 ,  B32B2571/00 ,  B32B2605/006 ,  Y10T428/24777

Abstract: A thin glass substrate, as well as a method and an apparatus are provided. The glass substrate has a glass having first and second main surfaces and elongated elevations on one of the main surfaces. The elevations rise in a normal direction, have a longitudinal extent that is greater than two times a transverse extent, and have a height, on average, that is less than 100 nm, and with a transverse extent of the elevation smaller than 40 mm. The method includes melting a glass, hot forming the glass, and adjusting a viscosity of the glass so that for the viscosity η1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component and y1 indicating a second distance to a location immediately downstream the flow rate control component the equation lg η1(y1)/dPa·s=(lg η01/dPa·s+a1(y1)) applies.

公开(公告)号：US11745459B2

公开(公告)日：2023-09-05

申请号：US16851998

申请日：2020-04-17

Applicant: SCHOTT AG

Inventor： Armin Vogl ,  Thomas Schmiady ,  Thilo Zachau ,  Michael Meister ,  Jochen Alkemper ,  Christian Kunert ,  Lutz Klippe ,  Rüdiger Dietrich

IPC: C03C3/083 ,  C03B17/06 ,  C03B18/02 ,  C03C3/087 ,  C03C3/093 ,  B32B3/26 ,  B32B17/10 ,  B32B3/30 ,  B32B3/02 ,  C03C21/00 ,  C03B23/023

CPC classification number: B32B3/263 ,  B32B3/02 ,  B32B3/26 ,  B32B3/30 ,  B32B17/10036 ,  B32B17/10045 ,  B32B17/10119 ,  B32B17/10137 ,  C03B17/064 ,  C03B18/02 ,  C03B23/023 ,  C03C3/083 ,  C03C3/087 ,  C03C3/093 ,  C03C21/002 ,  B32B2315/08 ,  B32B2329/04 ,  B32B2329/06 ,  B32B2551/00 ,  B32B2571/00 ,  B32B2605/006 ,  Y10T428/24777

Abstract: Thin glass substrates are provided. Also provided are methods and apparatuses for the production thereof and provides a thin glass substrate of improved optical quality. The method includes, after the melting and before a hot forming process, adjusting the viscosity of the glass that is to be formed or has at least partially been formed is in a defined manner for the thin glass substrate to be obtained. The apparatus includes a device for melting, a device for hot forming, and also a device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate, and the device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate is arranged upstream of the device for hot forming.