Verfahren und Vorrichtung zum Schneiden eines Mehrschichtigen Glaselements

Details

Veröffentlichungs-Nr.

EP4501569

Aktenzeichen

EP23188641

Anmeldetag

31. Juli 2023

Veröffentlichung

19. November 2025

Erteilung

19. November 2025

Rechtsraum

EP

IPC

B28D1/22B32B17/06G02B17/00G02B27/00G02B27/01G02B27/62G01B11/27

Abstract

The invention concerns a method for fabricating blanks for light-guide optical elements (1) from a compound glass stack (3), the compound glass stack (3) comprising a multitude of glass plates (5) bonded together, wherein light reflecting layers (7) are arranged between the glass plates (5), wherein the method comprises cutting slices (9) from the compound glass stack (3) along parallel cutting planes (11). The compound glass stack (3) is aligned to the cutting planes (11) so that the light reflecting layers (7) have a defined orientation with respect to the side faces (13, 15) of the slices (9) after cutting. The compound glass stack (3) has a plane (16) having a defined orientation with respect to the light reflecting layers (7) within the compound glass stack (3), so that the light reflecting layers (7) within the slices (9) are correctly oriented when the cutting planes (11) run parallel to the plane (16) of the compound glass stack (3). The alignment of the compound glass stack (3) to the cutting planes (11) comprises- adjusting the tilt angles of the plane (16) of the compound glass stack (3) with respect to the cutting planes (11) using an autocollimator (22), and- adjusting the position of the compound glass stack (3) in a direction obliquely, preferably perpendicular to the cutting planes (11).The compound glass stack (3) is held fixed to a holder (23) in its aligned orientation and cut into slices (9), the slices (9) forming blanks for light-guide optical elements (1).

Anmelder

Firmen

Lumus Ltd.
SCHOTT AG
SCHOTT Glass (Malaysia) Sdn Bhd

Land

🇮🇱 Israel

Fachgebiete