Abstract: An eyewear article for wearing outside of the human eye includes a flexible, transparent interference filter film with a multi-layer structure, wherein the interference filter film includes at least one filter layer with a layer thickness dimensioned to reduce a transmission of light of a selected range of wavelengths by optical interference. The interference filter film may have a static cling surface configured for removable attachment to a lens surface or an attachment layer affixed to the interference filter film for temporary or permanent attachment to a lens surface, for example by adhesion. The interference filter film may alternatively be bonded to an optical lens or form a separate structure for mechanical or magnetic mounting on eyeglasses.

Abstract: A method of drawing a material into sheet form includes forming a preform comprising at least one material as a large aspect ratio block wherein a first transverse dimension of the preform is much greater than a second transverse dimension substantially perpendicular to the first transverse dimension. A furnace having substantially linearly opposed heating elements one spaced from the other is provided and the heating elements are energized to apply heat to the preform to create a negative thermal gradient from an exterior surface along the first transverse dimension of the preform inward toward a central plane of the preform. The preform is drawn in such a manner that the material substantially maintains its first transverse dimension and deforms across its second transverse dimension.

Abstract: A method of drawing a material into sheet form includes forming a preform comprising at least one material as a large aspect ratio block wherein a first transverse dimension of the preform is much greater than a second transverse dimension substantially perpendicular to the first transverse dimension. A furnace having substantially linearly opposed heating elements one spaced from the other is provided and the heating elements are energized to apply heat to the preform to create a negative thermal gradient from an exterior surface along the first transverse dimension of the preform inward toward a central plane of the preform. The preform is drawn in such a manner that the material substantially maintains its first transverse dimension and deforms across its second transverse dimension.

Abstract: An eyewear article for wearing outside of the human eye includes a flexible, transparent interference filter film with a multi-layer structure, wherein the interference filter film includes at least one filter layer with a layer thickness dimensioned to reduce a transmission of light of a selected range of wavelengths by optical interference. The interference filter film may have a static cling surface configured for removable attachment to a lens surface or an attachment layer affixed to the interference filter film for temporary or permanent attachment to a lens surface, for example by adhesion. The interference filter film may alternatively be bonded to an optical lens or form a separate structure for mechanical or magnetic mounting on eyeglasses.

Abstract: A method of drawing a material into sheet form includes forming a preform comprising at least one material as a large aspect ratio block wherein a first transverse dimension of the preform is much greater than a second transverse dimension substantially perpendicular to the first transverse dimension. A furnace having substantially linearly opposed heating elements one spaced from the other is provided and the heating elements are energized to apply heat to the preform to create a negative thermal gradient from an exterior surface along the first transverse dimension of the preform inward toward a central plane of the preform. The preform is drawn in such a manner that the material substantially maintains its first transverse dimension and deforms across its second transverse dimension.

Abstract: A method of drawing a material into sheet form includes forming a preform comprising at least one material as a large aspect ratio block wherein a first transverse dimension of the preform is much greater than a second transverse dimension substantially perpendicular to the first transverse dimension. A furnace having substantially linearly opposed heating elements one spaced from the other is provided and the heating elements are energized to apply heat to the preform to create a negative thermal gradient from an exterior surface along the first transverse dimension of the preform inward toward a central plane of the preform. The preform is drawn in such a manner that the material substantially maintains its first transverse dimension and deforms across its second transverse dimension.