The disclosure is directed to broadband, glass optical polarizers and to methods for making the glass optical polarizers. The glass optical polarizer includes a substantially bubble free fusion drawn glass having two pristine glass surfaces and a plurality of elongated zero valent metallic particle polarizing layers.

The disclosure is directed to broadband, glass optical polarizers and to methods for making the glass optical polarizers. The glass optical polarizer includes a substantially bubble free fusion drawn glass having two pristine glass surfaces and a plurality of elongated zero valent metallic particle polarizing layers.

The present invention relates to the field of glass manufacturing, and discloses aluminoborosilicate glass, and a preparation method and an application thereof. Based on the total weight of components in the composition of the glass, the glass comprises: 33-60 wt % SiO.sub.2, 3-10 wt % Al.sub.2O.sub.3, 10-30 wt % B.sub.2O.sub.3, 1-15 wt % ZnO+TiO.sub.2+Sc.sub.2O.sub.3, and 7-27 wt % alkali-earth oxide RO, wherein RO is at least one of MgO, CaO, SrO and BaO, and 0.001 wt %Sc.sub.2O.sub.31 wt %. The aluminoborosilicate glass provided in the present invention has advantages including low density, high index of refraction, low thermal expansion coefficient, high thermostability, high flexibility, and easy bending, etc.

A method for the production of glass components, an apparatus for carrying out the method, and a glass component that is obtainable through the method are provided. The method is a drawing method wherein a forming zone of a preform is heated to a temperature that allows drawing of the glass. The method includes a forming zone of the preform that is very small. Thereby the width of the preform is decreased to a smaller extent than its thickness. The glass components that can be obtained by this method have very smooth surfaces.

A method for the production of glass components, an apparatus for carrying out the method, and a glass component that is obtainable through the method are provided. The method is a drawing method wherein a forming zone of a preform is heated to a temperature that allows drawing of the glass. The method includes a forming zone of the preform that is very small. Thereby the width of the preform is decreased to a smaller extent than its thickness. The glass components that can be obtained by this method have very smooth surfaces.

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W.sub.cast) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10.sup.8 Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10.sup.7 Poise and drawing the cast glass into a glass ribbon having a width (W.sub.ribbon) that is less than W.sub.cast; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50 C. or higher.

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W.sub.cast) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10.sup.8 Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10.sup.7 Poise and drawing the cast glass into a glass ribbon having a width (W.sub.ribbon) that is less than W.sub.cast; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50 C. or higher.

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W.sub.cast) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10.sup.8 Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10.sup.7 Poise and drawing the cast glass into a glass ribbon having a width (W.sub.ribbon) that is less than W.sub.cast; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50 C. or higher.

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W.sub.cast) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10.sup.8 Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10.sup.7 Poise and drawing the cast glass into a glass ribbon having a width (W.sub.ribbon) that is less than W.sub.cast; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50 C. or higher.

The present disclosure provides a device and a method with which flat glasses with particularly uniform thickness can be obtained. The methods are drawing methods in which a glass ribbon is drawn. In the method an aperture is used which allows a defined very small slit between the glass ribbon and the aperture also in the case of a change of the position of the glass ribbon.