Abstract: A method for calculating a digital twin of a spectacle lens having a curved lens surface to be used as the digital twin to manufacture a spectacle lens is disclosed. The digital twin of the spectacle lens contains a layer stack with individual layers. The method includes the step of determining the layer stack such that a form of an interface of an individual layer replicates the curved lens surface of the digital twin.

Abstract: A method for producing a plastic moulded part includes (a) laying down a plastic film onto a main frame such that the plastic film entirely covers a first through-opening and rests on an edge zone of an upper side of the main frame bordering the first through-opening; (b) heating the plastic film lying on the main frame; and (c) applying a fluid pressure medium such that the plastic film is pressed against a tool and thereby shaped into the plastic moulded part. The shaping of the plastic film is carried out in a pressure chamber. The pressure chamber is formed via a wall surrounding the tool pressing the main frame against the plastic film which presses said plastic film against the clamping frame, such that the clamping frame is part of the pressure chamber and the main frame is part of the pressure chamber.

Abstract: A plastic molding can be produced by (a) placing a plastic film on a main frame having a first through-opening, (b) heating the plastic film lying on the main frame, and (c) applying a fluid pressure medium to the plastic film lying on the main frame and heated in step (b). The plastic film is pushed against a mold, thereby forming the film to give a plastic molding. In step (a) a tensioning frame is applied to the plastic film lying on the main frame and is positioned such that the tensioning frame pushes the plastic film in the edge region against the upper face of the main frame, thereby fixating it. The second through-opening in the tensioning frame is at least partially opposite the first through-opening in the main frame. Step b) is carried out with the plastic film fixated between the main frame and the tensioning frame.

Abstract: An eyeglass lens for an optical imaging element for producing a virtual image of an initial image includes a main body and at least one complementary element mounted on the main body. The main body has a material with a first index of refraction n1. A viscous or solid intermediate layer is arranged between the complementary element and the main body at least in the region where the complementary element overlaps with a reflection section of the main body. The material of the viscous or solid intermediate layer has a second index of refraction n2 that satisfies the condition n2<n1 sin(?E). ?E is an angle of incidence of the light beams of the imaging beam path proceeding from the incoupling section and incident on the reflection section, selected such that at least 50% of the light beams of the imaging beam path have an angle of incidence of ?>?E.

Abstract: An eyeglass lens for an optical imaging element for producing a virtual image of an initial image includes a main body and at least one complementary element mounted on the main body. The main body has a material with a first index of refraction n1. A viscous or solid intermediate layer is arranged between the complementary element and the main body at least in the region where the complementary element overlaps with a reflection section of the main body. The material of the viscous or solid intermediate layer has a second index of refraction n2 that satisfies the condition n2<n1 sin(?E). ?E is an angle of incidence of the light beams of the imaging beam path proceeding from the incoupling section and incident on the reflection section, selected such that at least 50% of the light beams of the imaging beam path have an angle of incidence of ?>?E.

Abstract: An eyeglass lens for an optical imaging element for producing a virtual image of an initial image includes a main body and at least one complementary element mounted on the main body. The main body has a material with a first index of refraction n1. A viscous or solid intermediate layer is arranged between the complementary element and the main body at least in the region where the complementary element overlaps with a reflection section of the main body. The material of the viscous or solid intermediate layer has a second index of refraction n2 that satisfies the condition n2<n1 sin(?E). ?E is an angle of incidence of the light beams of the imaging beam path proceeding from the incoupling section and incident on the reflection section, selected such that at least 50% of the light beams of the imaging beam path have an angle of incidence of ?>?E.

Abstract: A lacquer composition is provided, comprising 20%-79.9% by weight, based on the total weight of the composition, of a thiol compound having two or more thiol groups, 20%-79.9% by weight, based on the total weight of the composition, of a compound having two or more carbon-carbon double bonds and 0.1%-10% by weight, based on the total weight of the composition, of a separating agent having an alkyl radical having 4-20 carbon atoms, where the alkyl radical is unsubstituted or fluorine-substituted and the alkyl radical is bonded to a functional group. Also provided are the use of this lacquer composition as a protective lacquer on an optical surface of an optical element in the production of the optical element, and an optical element comprising the protective lacquer.

Abstract: An optical component has a small-volume section and a large-volume section, wherein said optical component is a single-piece injection-molded component with the exception of one region in the large-volume section, said component being supplemented, in the region in the large-volume section, by an add-on to the optical component.

Abstract: An eyeglass lens for an optical imaging element for producing a virtual image of an initial image includes a main body and at least one complementary element mounted on the main body. The main body has a material with a first index of refraction n1. A viscous or solid intermediate layer is arranged between the complementary element and the main body at least in the region where the complementary element overlaps with a reflection section of the main body. The material of the viscous or solid intermediate layer has a second index of refraction n2 that satisfies the condition n2<n1 sin(?E). ?E is an angle of incidence of the light beams of the imaging beam path proceeding from the incoupling section and incident on the reflection section, selected such that at least 50% of the light beams of the imaging beam path have an angle of incidence of ?>?E.

Abstract: An eyeglass lens for an optical imaging element for producing a virtual image of an initial image includes a main body and at least one complementary element mounted on the main body. The main body has a material with a first index of refraction n1. A viscous or solid intermediate layer is arranged between the complementary element and the main body at least in the region where the complementary element overlaps with a reflection section of the main body. The material of the viscous or solid intermediate layer has a second index of refraction n2 that satisfies the condition n2<n1 sin(?E). ?E is an angle of incidence of the light beams of the imaging beam path proceeding from the incoupling section and incident on the reflection section, selected such that at least 50% of the light beams of the imaging beam path have an angle of incidence of ?>?E.

Abstract: A method for producing an optical element includes a) providing a first shell which is transparent in the predetermined wavelength range, b) applying a coating which is optically effective for the predetermined wavelength range onto the structured portion, c) providing a second shell which is transparent in the predetermined wavelength range, which shell has an integral embodiment and a smooth lower side which has a complementary form to the form of the upper side, d) applying an adhesive layer which is transparent in the predetermined wavelength range onto the upper side of the first shell and/or the lower side of the second shell, and e) connecting the upper side of the first shell with the lower side of the second shell by means of the adhesive layer such that a two-shell optical element is produced, in which the optically effective structure is buried.

Abstract: Disclosed is a lens arrangement, in particular a spectacle lens arrangement, having a base lens element, wherein the base lens element has a first surface and wherein the first surface has a first optically effective region, wherein the first surface has an elongate recess and wherein the elongate recess extends adjacent to the first optically effective region and at least partly encompasses the first optically effective region. Moreover, methods for producing a lens arrangement are disclosed.

Abstract: An eyeglass lens for an optical imaging element for producing a virtual image of an initial image includes a main body and at least one complementary element mounted on the main body. The main body has a material with a first index of refraction n1. A viscous or solid intermediate layer is arranged between the complementary element and the main body at least in the region where the complementary element overlaps with a reflection section of the main body. The material of the viscous or solid intermediate layer has a second index of refraction n2 that satisfies the condition n2<n1 sin(?E). ?E is an angle of incidence of the light beams of the imaging beam path proceeding from the incoupling section and incident on the reflection section, selected such that at least 50% of the light beams of the imaging beam path have an angle of incidence of ?>?E.

Abstract: Methods for coating an optical component with a sharp-edged structure and an optical component are provided. In a variant of the method, the sharp-edged structure in the optical component is rounded in that a lacquer that forms a lacquer meniscus is applied to the sharp-edged structure and subsequently solidified, the lacquer meniscus forming the rounding after the lacquer has solidified. After the rounding, a coating is applied to the optical component, the coating being applied at least to the lacquer meniscus.

Abstract: A method for producing an optical element includes providing a first partial body which is transparent for the predetermined wavelength range and including on its upper side a structured section, applying a coating which is optically effective for the predetermined wavelength range onto the structured section in order to form the optically effective structure, and applying a cover layer which is transparent for the predetermined wavelength range onto the upper side of the first partial body by means of casting of thermoplastic material and/or duroplastic material.

Abstract: A lacquer composition is provided, comprising 20%-79.9% by weight, based on the total weight of the composition, of a thiol compound having two or more thiol groups, 20%-79.9% by weight, based on the total weight of the composition, of a compound having two or more carbon-carbon double bonds and 0.1%-10% by weight, based on the total weight of the composition, of a separating agent having an alkyl radical having 4-20 carbon atoms, where the alkyl radical is unsubstituted or fluorine-substituted and the alkyl radical is bonded to a functional group. Also provided are the use of this lacquer composition as a protective lacquer on an optical surface of an optical element in the production of the optical element, and an optical element comprising the protective lacquer.

Abstract: A carrier device (10) is for handling a lens (12) which is received therein and which has a lateral edge (21), in particular for handling an eyeglass lens (12) in a machining or finishing process. The carrier device (10) comprises a main body (14) and has a connecting member (24) for releasably connecting the main body (14) to the received lens (12). The connecting member (24) forms, with the main body (14), a protective cover (15) surrounding the lateral edge (21) of the received lens (12) and a surface (30) of the received lens (12) directed toward the main body (14). The connecting member (24) is releasably connected to the main body (14).

Abstract: An optical component has a small-volume section and a large-volume section, wherein said optical component is a single-piece injection-molded component with the exception of one region in the large-volume section, said component being supplemented, in the region in the large-volume section, by an add-on to the optical component.

Abstract: Methods for coating an optical component with a sharp-edged structure and an optical component are provided. In a variant of the method, the sharp-edged structure in the optical component is rounded in that a lacquer that forms a lacquer meniscus is applied to the sharp-edged structure and subsequently solidified, the lacquer meniscus forming the rounding after the lacquer has solidified. After the rounding, a coating is applied to the optical component, the coating being applied at least to the lacquer meniscus.

Abstract: Disclosed is a lens arrangement, in particular a spectacle lens arrangement, having a base lens element, wherein the base lens element has a first surface and wherein the first surface has a first optically effective region, wherein the first surface has an elongate recess and wherein the elongate recess extends adjacent to the first optically effective region and at least partly encompasses the first optically effective region. Moreover, methods for producing a lens arrangement are disclosed.