摘要:
The invention relates to a photocromic plastic object, characterised by a permanently increased contrast relative to that of photocromic plastic objects available according to the state of the art. In other words, the photocromic plastic object according to the invention displays an improved contrast in the stationary state and in every phase, even during the darkening as well as during the lightening. Said plastic object can be used for as photocromic spectacle glass, in particular for sports glasses.
摘要:
Die Erfindung betrifft eine interferometische Schichtsystem-Plattform für optische Elemente (100) mit einem interferometrischen Schichtsystem (100), mit wenigstens einem Stapel (14) von aufeinander folgenden Schichtpaketen (20, 22, 24, 26, 28), wobei jedes Schichtpaket (20, 22, 24, 26, 28) eine erste Teilschicht (30) mit einer ersten optischen Dicke (t1) und eine zweite Teilschicht (32) mit einer zweiten, von der ersten optischen Dicke (t1) verschiedenen optischen Dicke (t2) umfasst. Dabei weist das Schichtpaket (20, 22, 24, 26, 28) optische Eigenschaften auf, die abhängig von einem Parameter (σ) vorgegeben sind, der eine Funktion eines Verhältnisses von Quotienten (v i ) der optischen Dicke (t1) jeweils einer höherbrechenden Teilschicht (30) und der optischen Dicke (t2) einer niedrigerbrechenden Teilschicht (32) des Schichtpakets (20, 22, 24, 26, 28) ist, wobei der Index i die Reihenfolge der aufeinander folgenden Schichtpakete (20, 22, 24, 26, 28) im Stapel (14) bezeichnet. Das Produkt aus einer Reflektivität (Rm) des Stapels (14) von Schichtpaketen (20, 22, 24, 26, 28) und dem Parameter (σ) ist kleiner als 1 bei einer Entspiegelung und/oder antireflektierenden Wirkung des Stapels (14) von Schichtpaketen (20, 22, 24, 26, 28), oder größer oder gleich 1 für eine Verspiegelung. Die Erfindung betrifft ferner ein optisches Element (100) mit einem solchen Schichtsystem (10).
摘要:
The invention relates to a layer system (10) comprising at least one stack (14) of successive multilayers (20, 22, 24, 26, 28), wherein each multilayer (20, 22, 24, 26, 28) comprises a first partial layer (30) with a first optical thickness (t1) and a second partial layer (32) with a second optical thickness (t2) that is different from the first optical thickness (t1). The multilayer (20, 22, 24, 26, 28) has optical characteristics that are specified depending on a parameter (σ) which is a function of a ratio of quotients (v i ) of the optical thickness (t1) of a partial layer (30) with higher refractive characteristics and the optical thickness (t2) of a partial layer (32) with lower refractive characteristics of the respective multilayers (20, 22, 24, 26, 28), wherein the index i denotes the order of the successive multilayers (20, 22, 24, 26, 28) in the stack (14). The product of a reflectivity (Rm) of the stack (14) of multilayers (20, 22, 24, 26, 28) and the parameter (σ) is less than for an anti-reflection and/or anti-glare action of the stack (14) of multilayers (20, 22, 24, 26, 28), or is greater than or equal to 1 for a mirroring. The invention also relates to an optical element (100) comprising such a layer system (10) and to a method for producing such a layer system (10).
摘要:
The invention relates to a grinding pad for detachably connecting a material blank to be ground to a retaining device, wherein the grinding pad comprises a polymeric carrier layer and adhesive coatings, which are applied to both sides of the polymeric carrier layer, wherein the one side of the polymeric carrier layer, which should be connected to the retaining device, has an adhesive coating that is formed of a first adhesive, and the other side of the polymeric carrier layer, which should be connected to the material blank, has an adhesive coating that is formed of a second and a third adhesive, which are different from each other, such that the second adhesive enables adhesion to the material blank and the third adhesive is an adhesive that limits rotation and translation of the polymeric carrier layer with respect to the material blank, wherein the second adhesive and the third adhesive are applied to the other side of the polymeric carrier layer in separate areas.