	US 12,234,174 B2
	Method for producing an optical element from glass
Alexander Kuppe, Neustadt an der Orla (DE); Ralf Polle, Neustadt an der Orla (DE); Thomas Walther, Neustadt an der Orla (DE); Peter Mühle, Neustadt an der Orla (DE); Christoph Dittmann, Neustadt an der Orla (DE); Stephan Jirak, Neustadt an der Orla (DE); Hagen Goldammer, Neustadt an der Orla (DE); Annegret Diatta, Neustadt an der Orla (DE); and Sven Fröhlich, Neustadt an der Orla (DE)
Assigned to DOCTER OPTICS SE, Neustadt An der Orla (DE)
Appl. No. 17/626,470
Filed by Docter Optics SE, Neustadt an der Orla (DE)
PCT Filed Jun. 5, 2020, PCT No. PCT/DE2020/100478 § 371(c)(1), (2) Date Jan. 11, 2022, PCT Pub. No. WO2021/008647, 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 2019 119 042.8 (DE), filed on Jul. 13, 2019; application No. 10 2019 128 689.1 (DE), filed on Oct. 23, 2019; application No. 10 2019 132 406.8 (DE), filed on Nov. 28, 2019; and application No. 10 2020 109 123.0 (DE), filed on Apr. 1, 2020.
Prior Publication US 2022/0298050 A1, Sep. 22, 2022
Int. Cl. C03B 11/08 (2006.01); C03B 23/00 (2006.01)

CPC C03B 11/08 (2013.01) [C03B 23/0013 (2013.01); C03B 23/0093 (2013.01); C03B 2215/46 (2013.01); C03B 2215/50 (2013.01)]

14 Claims

1. A method of producing an optical element, the method comprising:

providing a blank of glass;

providing a first mold;

providing at least a second mold;

providing a first actuator, the first mold and the first actuator being connected by means of a first movable guide rod and at least a second movable guide rod, wherein the first movable guide rod is guided in a first fixed recess in a fixed guide element and the second movable guide rod is guided in a second fixed recess in the fixed guide element;

providing a second actuator;

providing a frame, which comprises a first fixed guide rod and at least a second fixed guide rod, wherein the first fixed guide rod and the at least second fixed guide rod are connected at one end by a first fixed connector and at the other end by a second fixed connector, wherein the at least second mold is fixed to a movable guide element, which comprises a first recess through which the first fixed guide rod is guided and a second recess through which the at least second fixed guide rod is guided;

heating the blank;

moving the first mold towards the at least second mold by means of the first actuator; and

moving the at least second mold by means of the second actuator in the frame to form a closed cavity for press-molding the heated blank between the first mold and the at least second mold to form an optical element.