A micro- and nano-hot embossing method for an optical glass lens array, including: preparing a mold with a micro-hole array by micro EDM, where the micro-hole array matches an optical glass lens array and the mold is made of a hard metal material which is conductive and meets strength and temperature requirements; preparing a nano nitride-based graded composite coating on a surface of the mold by magnetron sputtering; and pre-fabricating a glass preform and then placing the glass preform on the surface of the mold; heating the glass preform and hot embossing by a glass molding machine in vacuum; cooling in nitrogen atmosphere; and demolding to produce the optical glass lens array. The micro- and nano-hot embossing method of the present invention improves the surface quality of the optical glass lens array and reduces the cost and difficulty for manufacturing.

A method for manufacturing an optical element out of glass comprises placing a blank made of glass on an annular contact face of a supporting body having a hollow cross section. The blank is heated on the supporting body in a cavity of a protective cap that is arranged in a furnace cavity, such that a temperature gradient is established in the blank in such a way that the blank is cooler inside than on an outside region. The blank is press molded to form the optical element.

A method for manufacturing an optical element out of glass comprises placing a blank made of glass on an annular contact face of a supporting body having a hollow cross section. The blank is heated on the supporting body in a cavity of a protective cap that is arranged in a furnace cavity, such that a temperature gradient is established in the blank in such a way that the blank is cooler inside than on an outside region. The blank is press molded to form the optical element.

The disclosure relates to a method for producing an optical element, for example an (optical) lens, for example a headlight lens, for example a vehicle headlight lens, from inorganic glass, wherein a blank of the inorganic glass is heated in a first heating step, for example in such a way that the blank is cooler on the inside than on its outer region, wherein, after heating, the blank is press-molded, for example on both sides, in a first pressing step between an upper mold and a lower mold to form an intermediate molded part, wherein the intermediate molded part is removed from the lower mold after the first pressing step, wherein a surface or the surface of the intermediate molded part formed by the lower mold and/or the surface of the intermediate molded part facing the lower mold is heated in a second heating step after the first pressing step, wherein the intermediate molded part is press-molded, for example on both sides, to the optical element or the (optical) lens, in a second pressing step after the second heating step, and wherein the optical element or the (optical) lens is cooled in a cooling path after the second pressing step.

The disclosure relates to a method for producing an optical element, for example an (optical) lens, for example a headlight lens, for example a vehicle headlight lens, from inorganic glass, wherein a blank of the inorganic glass is heated in a first heating step, for example in such a way that the blank is cooler on the inside than on its outer region, wherein, after heating, the blank is press-molded, for example on both sides, in a first pressing step between an upper mold and a lower mold to form an intermediate molded part, wherein the intermediate molded part is removed from the lower mold after the first pressing step, wherein a surface or the surface of the intermediate molded part formed by the lower mold and/or the surface of the intermediate molded part facing the lower mold is heated in a second heating step after the first pressing step, wherein the intermediate molded part is press-molded, for example on both sides, to the optical element or the (optical) lens, in a second pressing step after the second heating step, and wherein the optical element or the (optical) lens is cooled in a cooling path after the second pressing step.

A molding mold of a glass product includes a lower mold defining a first molding surface and an upper mold defining a second molding surface. The first molding surface is disposed on one side of the lower mold close to the upper mold. The second molding surface is opposite to the first molding surface. The first molding surface includes a first molding portion and a first fixing portion disposed on a periphery of the first molding portion. The second molding surface includes a second molding portion and a second fixing portion disposed on a periphery of the second molding portion. The lower mold includes a support portion extending from the first fixing portion of the lower mold toward the second fixing portion. The support portion abuts against the second fixing portion, so that the first molding portion and the second molding portion form a molding chamber.

A molding mold of a glass product includes a lower mold defining a first molding surface and an upper mold defining a second molding surface. The first molding surface is disposed on one side of the lower mold close to the upper mold. The second molding surface is opposite to the first molding surface. The first molding surface includes a first molding portion and a first fixing portion disposed on a periphery of the first molding portion. The second molding surface includes a second molding portion and a second fixing portion disposed on a periphery of the second molding portion. The lower mold includes a support portion extending from the first fixing portion of the lower mold toward the second fixing portion. The support portion abuts against the second fixing portion, so that the first molding portion and the second molding portion form a molding chamber.

Provided is a method of molding an optical element. The method includes: inserting a neck portion provided in each of an upper mold and a lower mold into a hole portion provided in a side surface mold; replacing an atmosphere in the hole portion of the side surface mold with an inert gas through a groove communicating between either an upper end surface or a lower end surface of the side surface mold and the hole portion of the side surface mold; heating a molding material disposed in the hole portion of the side surface mold; and bringing the upper mold and the side surface mold, and the lower mold relatively close to each other to press molding the molding material to obtain an optical element.

Provided is a method of molding an optical element. The method includes: inserting a neck portion provided in each of an upper mold and a lower mold into a hole portion provided in a side surface mold; replacing an atmosphere in the hole portion of the side surface mold with an inert gas through a groove communicating between either an upper end surface or a lower end surface of the side surface mold and the hole portion of the side surface mold; heating a molding material disposed in the hole portion of the side surface mold; and bringing the upper mold and the side surface mold, and the lower mold relatively close to each other to press molding the molding material to obtain an optical element.

The present disclosure provides an improved production method for optical elements. In this case, it is desirable to achieve high contour accuracy and/or surface quality for optical elements or lenses or headlight lens. In addition, it is desirable to reduce the costs of a production process for objective lenses and/or headlights, microprojectors or vehicle headlights.