Known heating burners for producing a welded joint between components of quartz glass include a burner head in which at least one burner nozzle is formed, a burner-head cooling system for the temperature control of the burner head and a supply line connected to the burner nozzle for a fuel gas. Starting from this, to modify a heating burner in such a way that impurities in the weld seam between quartz-glass components to be connected are largely avoided, it is suggested that the burner head should include a base body of silver or of a silver-based alloy.

A system for use in glass production technology such as for production of glass packaging, glassware, glass home equipments, wherein the system allows all kinds of design additions such as color, pattern, texture, decor, seal and form changing processes to be applied to the product without requiring re-firing of the product, after removal of the product from the moulds in the production lines while the product is still hot and the temperature is kept constant.

A method includes pressing a preform with a mold including a mold body and a plurality of mold protrusions extending from the mold body at a pressing temperature and a pressing pressure sufficient to transform the preform into a shaped article including a plurality of cavities corresponding to the plurality of mold protrusions. The preform is formed from a glass material, a glass-ceramic material, or a combination thereof. The mold body is formed from a porous material. The plurality of mold protrusions is formed from a non-porous material.

An outer wall material includes a first transparent member integrally or separately including a transparent plate material and a prism portion; and a reflection member provided on a second side of the prism portion of the first transparent member. The prism portion causes the reflection member to collect light whose angle with respect to a normal line of the plate material is equal to or greater than a predetermined angle and to retro-reflect the collected light, and transmits light whose angle with respect to the normal line of the plate material is less than the predetermined angle.

An outer wall material includes a first transparent member integrally or separately including a transparent plate material and a prism portion; and a reflection member provided on a second side of the prism portion of the first transparent member. The prism portion causes the reflection member to collect light whose angle with respect to a normal line of the plate material is equal to or greater than a predetermined angle and to retro-reflect the collected light, and transmits light whose angle with respect to the normal line of the plate material is less than the predetermined angle.

Embodiments of a curved vehicle display including a display module having a display surface, a curved glass substrate disposed on the display surface having a first major surface, a second major surface having a second surface area, and a thickness in a range from 0.05 mm to 2 mm, wherein the second major surface comprises a first radius of curvature of 200 mm or greater, wherein, when the display module emits a light, the light transmitted through the glass substrate has a substantially uniform color along 75% or more of the second surface area, when viewed at a viewing angle at a distance of 0.5 meters from the second surface. Methods of forming a curved vehicle display are also disclosed.

Methods for making articles comprising crystalline material. Exemplary articles made by a method described herein include electronics enclosure (e.g., a watch case, cellular phone case, or a tablet case).

A method for monitoring a laser welding process for welding two workpieces using a laser wavelength, in which a pulsed laser beam is directed into the workpieces so as to melt a melting volume in a region of an interface of the two workpieces in order to produce a weld seam, and in which an intensity of a process radiation emitted by the melting volume is detected. According to the method for monitoring the lase welding process, in a first step, a detected intensity profile is evaluated with regard to at least one of the following features: (i) a depth of an intensity decrease, (ii) a duration of an intensity decrease, and (iii) a renewed increase in intensity after an intensity decrease. In a second step it is determined whether or not a gap between the two workpieces was bridged during the laser welding process based on the evaluation.

A method for manufacturing a formed glass includes using a heating apparatus. The heating apparatus includes a heating element and a heat reservoir having a transmittance of 50% or more in a wavelength of 0.5 um to 2.5 um. The heat reservoir is arranged between the heating element and a glass substrate as an object to be heated. The glass substrate is heated with the heating element, and the glass substrate is formed into a desired shape.

A method for monitoring optical fiber temperature includes heating an optical fiber using a heat source, and measuring an infrared radiation level emitted by an optical fiber during heating of the optical fiber. The method further includes comparing the infrared radiation level to a radiation level setpoint for the optical fiber to determine a radiation level error value. The method further includes adjusting a power level setpoint of the heat source based on the radiation level error value.