The disclosure relates to a method for producing an optical element (202), wherein a blank of transparent material is heated and/or provided and, after heating and/or after being provided is press molded, for example on both sides, between a first mold (UF) and at least one second mold (OF), to form the optical element (202) and is then sprayed with a surface treatment agent.

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.

The invention relates to a process for the preparation of a glass-ceramic blank for dental purposes with lithium silicate as crystal phase, in which lithium silicate blanks that are no longer required and in particular residues thereof are used as starting material and which allows the production of a homogeneous starting glass within a short time.

A processing fixture can be employed for processing a glass cover plate and include: a fixture body, a first sensing component, a roller component, and a control module connected with the first sensing component. The fixture body is made from flexible materials and provided with a positioning groove matched with shape of an outer surface of the glass cover plate. The first sensing component is configured to detect current dimension parameter of the glass cover plate and/or an attaching layer attached to the glass cover plate in the positioning groove, and transmit the detected current dimension parameter to the control module. The control module is configured to control cooperation of the roller component and the fixture body according to the current dimension parameter, so as to correct the current dimension parameter of the glass cover plate or the attaching layer as a target dimension parameter.

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.

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 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 plate-like glass includes a chemically strengthened glass having a first surface, a second surface facing the first surface, and an end surface connecting the first surface and second surface. When a tangential direction from an arbitrary point on the first surface is assumed to be an X-axis, a direction orthogonal to the X-axis is assumed to be a Y-axis, and a direction orthogonal to the X-axis and the Y-axis is assumed to be a Z-axis, the X-axis is a direction in which a first curvature radius R.sub.1 in cross-section of the first surface in an XZ plane passing the X-axis and Z-axis is minimum. The first surface has a curvature part in which the surface is bent in the X-axis direction on the first surface and the first curvature radius R.sub.1 is within a specific range.

A method for manufacturing an SiO.sub.2—TiO.sub.2 based glass upon a target by a direct method, includes a first process of preheating the target and a second process of growing an SiO.sub.2—TiO.sub.2 based glass ingot to a predetermined length upon the target which has been preheated, wherein the target is heated in the first process such that, in the second process, the temperature of growing surface of the glass ingot is maintained at or above a predetermined lower limit temperature.

The invention relates to a device for supportingly holding, and moving, a glass preform, such as a gob, wherein the device has a carrier device, at least one rod-shaped support element, which during operation is substantially vertically aligned, wherein, at its upper end, the rod-shaped support element opens into at least one point-shaped upwardly directed support surface; and/or the device has at least one support element which during operation is substantially vertically aligned, has a substantially inverted U-shape, and has a support surface which is upwardly directed and connects the substantially vertically extending vertical portions of the support element.