A method of forming a glass article includes positioning a first glass substrate and a second glass substrate with a first interface surface of the first glass substrate facing a second interface surface of the second glass substrate to produce a glass article precursor, and heating the glass article precursor in a sealing environment to stack seal the first glass substrate to the second glass substrate to form the glass article. Subsequent to the heating, the second interface surface and the first interface surface are in direct contact with one another, establishing an interface between the first glass substrate and the second glass substrate.

The present disclosure provides a suitable method for producing a headlight lens for a vehicle headlight, for example for a motor-vehicle headlight, wherein the headlight lens comprises an integral body made of glass, wherein the integral body comprises at least one light tunnel and one 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 in order to image the bend as a bright-dark-boundary by means of light directed into the light entry surface.

An enclosure for providing a controlled environment includes a central plane extending through a top end of the enclosure and a bottom end of the enclosure and bisecting the enclosure along a width of the enclosure, an inlet at the bottom end of the enclosure having an inlet width, W.sub.inlet, an enclosure wall extending from the inlet to the top end of the enclosure, an entry port at the top end of the enclosure, and an outlet between the entry port and the chamber region of the enclosure wall. The enclosure wall comprises a chamber region and a transition region between the inlet and the chamber region. The width of the chamber region, W.sub.chamber, is substantially constant through the chamber region. The width of the enclosure in the transition region decreases from W.sub.chamber to W.sub.inlet, and a ratio of W.sub.inlet to W.sub.chamber is from 1:2 to 1:5.

Chamfering processing for chamfering an edge face of a disk-shaped glass plate includes a step of disposing the glass plate such that a portion of the glass plate is disposed in a heating space for heating the glass plate and the remaining portion is disposed outside the heating space; and a step of softening a portion of the edge face of the glass plate by irradiating a circumferential portion of the edge face with a laser beam outside the heating space while rotating the glass plate in one direction around the center of the glass plate, and heating the softened portion of the edge face that has reached the heating space through the rotation.

An apparatus for the automated production of glass assemblies includes: a turning machine with at least two spindles, which are rotatable about a common axis of rotation and which each have a workpiece holder, wherein the workpiece holders are arranged opposite one another; one or more gas burners or lasers fixed on a first tool carriage which is movable in parallel and/or perpendicularly to the axis of rotation; one or more drives for driving a rotational movement of the spindles and a movement of the first tool carriage; a pressure module including a pump device at least one working cylinder for applying a pressure to an inner tube and/or to a space between the inner tube and an outer tube; and a control unit configured to control the burners or lasers, one or more drives, the first tool carriage and the pressure module.

The present disclosure provides a suitable method for producing a headlight lens for a vehicle headlight, for example for a motor-vehicle headlight, wherein the headlight lens comprises an integral body made of glass, wherein the integral body comprises at least one light tunnel and one 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 in order to image the bend as a bright-dark-boundary by means of light directed into the light entry surface.

An enclosure for providing a controlled environment includes a central plane extending through a top end of the enclosure and a bottom end of the enclosure and bisecting the enclosure along a width of the enclosure, an inlet at the bottom end of the enclosure having an inlet width, W.sub.inlet, an enclosure wall extending from the inlet to the top end of the enclosure, an entry port at the top end of the enclosure, and an outlet between the entry port and the chamber region of the enclosure wall. The enclosure wall comprises a chamber region and a transition region between the inlet and the chamber region. The width of the chamber region, W.sub.chamber, is substantially constant through the chamber region. The width of the enclosure in the transition region decreases from W.sub.chamber to W.sub.inlet, and a ratio of W.sub.inlet to W.sub.chamber is from 1:2 to 1:5.

An ionically conductive glass (or glassy) monolithic preform having a certain shape, size, and dimension may be made from a monolithic precursor material (e.g., an ingot or boule of ion conductive glass), generally of a different shape and size.

A pressing device for preparing culture dishes using flat glass and a process thereof, utilizing a flat glass bending molding process of high borosilicate glass or soda-lime glass. The prepared culture dish can not only give full play to the excellent physical and chemical properties of high borosilicate glass flat glass or soda-lime glass, but also the flatness of the inner plane of the glass bottom of the culture dish is higher, the product quality is stable, and it is more energy-saving, efficient and high-quality.

The invention relates to a method for producing a glass-ceramic composite object, and a glass-ceramic composite object produced from at least two starting elements. In the method, respective surfaces of at least two starting elements consisting of the precursor glass of the glass-ceramic material are pressed flat and directly against one another with the application of pressure, and at a temperature at which the ceramisation of the glass-ceramic material takes place they are joined so as to create a monolithic bond between the at least two starting elements.