US 12,319,605 B2
Method for producing a headlight lens for a vehicle headlight
Alexander Kuppe, Neustadt an der Orla (DE); Thomas Walther, Neustadt an der Orla (DE); and Hagen Goldammer, Neustadt an der Orla (DE)
Assigned to Docter Optics SE, Neustadt an der Orla (DE)
Appl. No. 17/626,118
Filed by Docter Optics SE, Neustadt an der Orla (DE)
PCT Filed Jul. 11, 2020, PCT No. PCT/DE2020/100609
§ 371(c)(1), (2) Date Jan. 10, 2022,
PCT Pub. No. WO2021/008657, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 10 2019 119 040.1 (DE), filed on Jul. 13, 2019; application No. 10 2020 109 123.0 (DE), filed on Apr. 1, 2020; and application No. 10 2020 115 083.0 (DE), filed on Jun. 5, 2020.
Prior Publication US 2022/0289614 A1, Sep. 15, 2022
Int. Cl. C03B 23/00 (2006.01); C03B 11/08 (2006.01); F21S 41/27 (2018.01)
CPC C03B 23/0013 (2013.01) [C03B 11/08 (2013.01); C03B 23/0093 (2013.01); F21S 41/27 (2018.01); C03B 2215/412 (2013.01); C03B 2215/49 (2013.01); C03B 2215/50 (2013.01); C03B 2215/70 (2013.01); C03B 2215/78 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of producing a headlight lens for a vehicle headlight, the method comprising:
providing a first partial mold; providing a second partial mold; providing at least a third partial mold; providing a ram;
press-molding a heated blank of glass between the first partial mold, the second partial mold, and the third partial mold to form a headlight lens having an integral body made of glass, the integral body comprising at least one light tunnel and a light-passage section having at least one optically active light exit surface, wherein the light tunnel comprises at least one light entry surface and, with a bend, transitions into the light-passage section configured to image the bend as a bright-dark-boundary by means of light directed into the light entry surface, wherein the press-molding comprises:
molding the light tunnel, the bend, and at least a portion of the light-passage section by means of the second partial mold;
molding at least a portion of the light-passage section by means of the first partial mold and the third partial mold;
moving the second partial mold and the third partial mold towards each other; and
during press-molding, pressing the ram against the second partial mold and the third partial mold, the direction of pressing being orthogonal to the direction of movement of the second partial mold and the third partial mold.