The present 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 between a first mold (UF) and at least one second mold (OF), is press molded to form the optical element (202), in particular on both sides, and is then sprayed with a surface treatment agent.

An apparatus for processing cover windows includes a first mold including a first support a second support spaced apart from the first support, where the first support and second support are configured to hold processing targets; a second mold; and a third mold spaced apart from the second mold. The second mold includes a first pressurizing portion overlapping with the first support, having a first thickness, and a second pressurizing portion connected with the first pressurizing portion and configured to overlap with the first support, having a second thickness thinner than the first thickness. The third mold includes a third pressurizing portion overlapping with the second support, having a third thickness, and a fourth pressurizing portion connected with the third pressurizing portion and overlapping with the second support, having a fourth thickness thinner than the third thickness.

A parallelepipedal low-pressure plasma chamber body of glass is disclosed. The low-pressure plasma chamber may have electrodes at opposing sides of the low-pressure plasma chamber body. Furthermore, the low-pressure plasma chamber may have at opposing sides a door and a rear wall closure. The door and rear wall closure may in each case have at least one media connection in order to achieve a uniform gas flow in the low-pressure plasma chamber. The door may be assembled on the collar of the low-pressure plasma chamber body which extends radially away from the longitudinal axis of the low-pressure plasma chamber body. The low-pressure plasma chamber body is preferably produced using the pressing method or blow-and-blow method, in an analogous manner to industrial glass bottle production.

According to one example, a molding apparatus may be utilized to mold one or more glass elements by heating of one or more glass materials and pressing the one or more glass materials between an upper mold and a lower mold. The molding apparatus includes a radiant heating module comprising a plurality of radiant heating elements, an upper resistive heating module comprising a first plurality of independently controlled resistive heating elements, and a lower resistive heating module comprising a second plurality of independently controlled resistive heating elements.

The method for manufacturing a plate glass is a method for manufacturing the plate glass having sides of at least 30 cm or more and a surface thereof on which a predetermined shape is formed. In the manufacturing method, the flat plate glass is heated to a temperature which is lower than a softening point and at which the heated flat plate glass is deformable by being pressed at a predetermined pressure or higher, the heated flat glass, which has been molded by pressing the flat plate glass with a die having a die structure for forming the predetermined shape, is cooled to the strain point while being held with the die. Further, in the manufacturing method, the pressing is performed with the die having a coefficient of thermal expansion whose difference from that of the plate glass is 2.0×10.sup.−6/K or less.

An optical glass includes La.sup.3+, Zn.sup.2+, Nb.sup.5+, and Ti.sup.4+ as a cation configuring glass. La.sup.3+, Zn.sup.2+, Nb.sup.5+, and Ti.sup.4+ which satisfy 10 cat %≤La.sup.3+≤20 cat %, 10 cat %≤Zn.sup.2+≤60 cat %, 20 cat %≤Nb.sup.5+≤60 cat %, and 0 cat %≤Ti.sup.4+≤40 cat % expressed by cation %.

Provided is a method of molding an optical element to obtain the molded optical element. The method includes: preparing a die set including an upper die having an upper molding surface, a lower die having a lower molding surface, a side die in which a through hole is formed, and a sleeve configured to accommodate the upper die, the lower die, and the side die; disposing a mold material on the lower molding surface after inserting the lower die into the through hole of the side die; heating the mold material; press molding the mold material with the upper die and the lower die to integrally move the side die and the lower die with respect to the upper die and the sleeve; and pushing the optical element upward by raising the lower die with respect to the side die and the sleeve.

The present 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 between a first mold (UF) and at least one second mold (OF), is press molded to form the optical element (202), in particular on both sides, and is then sprayed with a surface treatment agent.

A method of molding a window for a display device includes: forming curved side surfaces and curved corners of the window, by pressing a heated preliminary window glass to a mold. The mold includes: a flat portion corresponding to a flat display portion of the display device; a window side surface bending portion corresponding to the side surfaces of the display device; and a window corner bending portion corresponding to the corners of the display device. The forming the curved side surfaces of the window includes pressing the heated preliminary window glass against the window side surface bending portion of the mold; and after the forming of the curved side surfaces, forming the curved corners and a flat portion of the window by further pressing the heated preliminary window glass respectively against the window corner bending portion and the flat portion of the mold.

An optical lens molding device includes a raw material supplying unit for providing a solid-state optical material, a feeding unit for transporting the solid-state optical material along a feeding direction, a heating unit including a heating body and a heating conduit in spatial communication with the supplying unit for entering of the solid-state optical material, and a molding unit. The heating conduit has a downstream part extending in the heating body to heat and melt the solid-state optical material in the heating conduit into a fluid-state optical material. The molding unit defines a cavity and a sprue in communication between the cavity and the downstream part to permit the molten fluid-state optical material to be pressed by the solid-state optical material and to flow in and fill the cavity through the sprue.