OPTICAL COMPONENT FOR THE IR RANGE WITH STRESS-COMPENSATED COATING

摘要

A method for designing an optical component for the IR range in which its desired technical characteristics are determined, and the optical component is simulated. The simulated optical component has a layer sequence of layers which are stacked one upon the other and have at least one low-index layer whose refractive index lies in a range from 1.35 to 1.7 and a high-index layer whose refractive index lies in a range from 3 to 5. Subsequently, a modified simulated optical component is generated in that at least one low-index layer of the simulated optical component is divided into at least two partial layers and a mid-index layer is inserted between at least two of the partial layers. The layer thicknesses of the modified simulated optical component are adapted by means of a further simulation such that the modified simulated optical component has the desired technical characteristics.

主权项

1. Method for designing an optical component for the IR range comprising the following steps:
a) determining desired technical characteristics of the optical component, b) simulating an optical component having the desired technical characteristics, wherein the simulated optical component has a layer sequence of layers which are stacked one upon the other and have at least one low-index layer whose refractive index lies in a range from 1.35 to 1.7 and a high-index layer whose refractive index lies in a range from 3 to 5, c) generating a modified simulated optical component by dividing at least one low-index layer of the simulated optical component into at least two partial layers and by inserting a mid-index layer between at least two of the partial layers, wherein the refractive index of the mid-index layer lies in a range from 1.8 to 2.5 and its strain coefficient has an opposite sign with respect to the strain coefficient of every low-index layer and every high-index layer, d) adapting the layer thicknesses of the modified simulated optical component by means of a further simulation such that the modified simulated optical component has the desired technical characteristics, and e) providing the results of the further simulation such that information about the layer sequence and specification of the thicknesses of the layers of the layer sequence are accessible to a user.