A curved glass manufacturing method includes: successively stacking a lower mold, flat glass, and an upper mold, thereby forming a mold assembly; moving the mold assembly to a first chamber and then heating the same; moving the mold assembly from the first chamber to a second chamber and then pressurizing the upper mold so as to move the upper mold downward, thereby molding the flat glass in a curved shape; moving the mold assembly from the second chamber to a third chamber and then slowly cooling the molded glass; and moving the mold assembly from the third chamber to a fourth chamber and then cooling the molded glass. An elastic member is arranged between the lower mold and the upper mold and configured to define a space between the upper mold and the flat glass, and the elastic member is compressed when the upper mold is pressurized.

A process for heating a glass or glass ceramic article with copper-metallized through holes includes heating the article from a first temperature to a second temperature. The first temperature is greater than or equal to 200 C. and less than or equal to 300 C., and the second temperature is greater than or equal to 350 C. and less than or equal to 450 C. An average heating rate during the heating of the article from the first temperature to the second temperature is greater than 0.0 C./min and less than 8.7 C./min. An article includes a glass or glass ceramic substrate having at least one through hole penetrating the substrate in a thickness direction; and copper present in the at least one through hole. The article does not comprise radial cracks.

A synthetic quartz glass substrate having a controlled hydrogen molecule concentration is prepared by (a) hot shaping a synthetic quartz glass ingot into a glass block, (b) slicing the glass block into a glass plate, (c) annealing the glass plate at 500-1,250 C. for 15-60 hours, (d) hydrogen doping treatment of the glass plate in a hydrogen gas atmosphere at 300-450 C. for 20-40 hours, and (e) dehydrogenation treatment of the glass plate at 200-400 C. for 5-10 hours.

A sheet of glass can be formed in a batch process by introducing molten glass onto a layer of molten tin within a tank. The tank may be outfitted with infrared emitters to control the amount of heat delivered to the tank while the sheet of glass is formed. A lower surface of the tank can have a three-dimensional shape, and the molten tin may be removed from the tank while the sheet of glass is ductile so that the sheet of glass is molded by the three-dimensional shape, thereby producing a shaped sheet of glass. The delivery of infrared energy to the tank may be facilitated by one or more ceramic glass surface.

Methods of processing glass-based substrates to reduce birefringent defects and glass-based substrates are disclosed. In one embodiment, a method for processing a glass-based substrate includes rolling a glass-based material to form the glass-based substrate, and heat treating the glass-based substrate by increasing a temperate of the glass-based substrate, holding the temperature at a maximum temperature for a hold period, and then decreasing the temperature at one or more cooling rates, wherein after the heat treating, the glass-based substrate has a retardance over thickness of 5 nm/mm or less at locations outside of and including 5 mm from any corner of the glass-based substrate and outside of and including 5 mm from any edge of the glass-based substrate.

The use of camera based safety systems is growing at a rapid rate in modern automobiles. As the industry moves towards vehicles with full autonomous capability, the number of cameras required and the resolution of the cameras are both increasing. At the same time, windshields, where many of the cameras are mounted, are becoming larger and more complex in shape. This presents problems in the area of camera optics. Variations in the thickness of the glass and the plastic layer, surface mismatch, surface texture and the design curvature of the glass in conjunction with the often low installation angle, can reduce the optical clarity of the camera optics. These optical aberrations are further exacerbated during the lamination process when the layers are bonded together under pressure. The laminate of the invention utilizes a cutout in the plastic bonding layer in side of the laminate, preferable in the camera field of view. A laminating resin is used to fill the gap left by the cutout between the two glass layers.

A method for producing a bent glass article includes a heat treatment step of heat-treating a bent glass. The bent glass includes a first main stir-face, a second main surface and an end face. In the heat treatment step, the bent glass is supported by a support jig with one of the main surfaces facing downward. The support jig supports at least a part of one of the main surfaces or the end face in a higher position than the lowest position of one of the main surfaces.

A forming method for curved glass has been provided. The method comprises: placing a flat glass plate in a pattern die, and placing the pattern die in a forming apparatus; and subjecting the pattern die successively to staged heating, staged forming and staged cooling, so as to obtain the curved glass, wherein the staged heating is performed over stages which are different from each other in temperature, the staged forming is performed over stages which are different from each other in temperature, and during at least one of the stages, a varying pressure which varies from low pressure to high pressure is applied to the pattern die, the staged cooling is performed by cooling the glass plate in the pattern die over stages which are different from each other in temperature. The glass product could be used as front and rear covers of electronic products including notebook computers, mobile phones, tablet computers and smart watches.

A process for heating a glass or glass ceramic article with copper-metallized through holes includes heating the article from a first temperature to a second temperature. The first temperature is greater than or equal to 200 C. and less than or equal to 300 C., and the second temperature is greater than or equal to 350 C. and less than or equal to 450 C. An average heating rate during the heating of the article from the first temperature to the second temperature is greater than 0.0 C./min and less than 8.7 C./min. An article includes a glass or glass ceramic substrate having at least one through hole penetrating the substrate in a thickness direction; and copper present in the at least one through hole. The article does not comprise radial cracks.

A process for manufacturing an electrochromic glazing unit includes forming, on one face of a glass sheet, a complete all-solid-state electrochromic stack including in succession a first layer of a transparent conductive oxide; a layer of a cathodically colored mineral electrochromic material to form an electrochromic electrode; a layer of an ionically conductive mineral solid electrolyte; a layer of a cation intercalation material to form a counter electrode; and a second layer of a transparent conductive oxide; then heat treatment of the complete electrochromic stack by irradiation with radiation having a wavelength comprised between 500 and 2000 nm, the radiation originating from a radiating device placed facing the electrochromic stack, a relative movement being created between the radiating device and the substrate so as to raise the electrochromic stack to a temperature at least equal to 300 C. for a brief duration, for example shorter than 100 milliseconds.