OOFELIE for Advanced Optics - SAMTECH - #1

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ANALYSES Oofelie for Advanced Optics allows specific static and transient analyses for opto-thermo-mechanical systems. Starting from the description of the optical system problem in ZEMAX, the geometry of optical components is exported to SAMCEF Field using standard CAD exchange formats. In SAMCEF Field, the surrounding support is built around these optical components and thermo-mechanical loads are applied to the system. Before thermo-mechanical analysis, Oofelie performs a verification process of the sag of each node of the Finite Element mesh belonging to each optical surface. If the sag is not represented with a sufficient precision, Oofelie recomputes its value using the analytical equation of the surface provided by ZEMAX. Oofelie provides then the sag precision required by optical model tolerance. The parameters of the analytical equation are retrieved by an automated process based on Oofelie’s in-memory dialogue capabilities. After the thermo-mechanical analysis, the updating process of an existing optical problem takes place: the initial definition of a given optical surface is modified with the definition of grid sag values or coefficients from decomposition in Zernike polynomials. These values are computed from the knowledge of the structural deformation induced on the optical surface by the thermo-mechanical loads. If the deformed configuration contains rigid body components (translation and/or rotation), those parameters are identified too and are also introduced in the updated optical design. Again, with the help of its in-memory dialogue capabilities, Oofelie exchanges automatically information with ZEMAX which reduces human interventions during data transfer between the two applications, thereby gaining productivity and reducing risk of loss of data integrity. KEY FEATURES In this solution, to interact with ZEMAX, Oofelie was provided with the following capabilities: • Automated in-memory data exchanges with ZEMAX-EE • Expression of the deformed shape in term of o A linear combination of Zernike polynomials o As grid of points • Separation of the rigid body component • Automated modification of the optical problem • Automated retrieval of optical performance indicators MODELING ENVIRONMENT Oofelie for Advanced Optics is driven by a user-friendly integrated graphical user interface, SAMCEF Field, for the modeling, the analysis and the post-processing of opto-thermo-mechanical systems. SAMCEF Field, a complete and interactive user environment providing all the tools necessary to design, simulate and analyze a range of configurations, has been tailored to approach efficiently the field of opto-thermo-mechanics. Its visual and hierarchically arranged layout will guide you through all the steps of model preparation, resolution procedure and analysis. A CAD modeler, as well as import capabilities from other leading CAD providers, is integrated for modeling and data preparation. As data are directly defined on the geometry, users can easily switch system components modeling level from one behavior to another. Parameterized data entry is easily done using contextual pull-down menus and pop up boxes using a wide selection of preprogrammed functions for the definition of time and frequency varying properties and boundary conditions. As soon as the analysis is completed, the results are easily accessible from a simple click in the navigator. Results may be displayed in different forms over the whole model or through user’s defined cross-sections to study detailed behavior. In addition to all the state-of-the-art standard graphic outputs (i.e. X-Y plots, isovalues, animations, etc.), results may also be inserted in tabular forms in the analysis report. SAMCEF Field is common to all the solutions provided by Open Engineering, allowing other analyses to be performed on the same model as for opto-thermo-mechanical simulations. If available, optical performance indicators are automatically retrieved by Oofelie from the updated optical design (these indicators are also available in SAMCEF Field): • The spot diagram; • The wave front map; • The merit function value. Oofelie for Advanced Optics, driven by SAMCEF Field, provides engineers and analysts with unique capabilities to analyse thermo-mechanical effects on high precision optical systems, such as lenses, optical benches, telescopes and MOEMS. You are getting at the core of the physics in one conveniently integrated simulation package. Oofelie for Advanced Optics enables the analysis and design of opto-thermo-mechanical systems through tied connection with the optical simulation software ZEMAX™. Oofelie for Advanced Optics is a Virtual Prototyping tool for the analysis and design of opto-thermomechanical systems. Through the use of its modeling capabilities, it becomes possible to start simulating the performance of such systems even before a single physical prototype is built. Design changes can be evaluated faster and in a more affordable manner, reducing the number of actual prototypes needed to achieve a required design maturity, thus accelerating significantly product development. Thanks to such a tool, the engineers acquire a capability to isolate and analyze the effect of each parameter. With such insight available at their fingertips, information can be quickly gained to correct or improve previous designs efficiently, knowing which are the influent factors. Reduced design time, improved quality and reduced costs are some of the benefits one can now obtain using Oofelie for Advanced Optics Oofelie for Advanced Optics Oofelie Multiphysics 2010 MOEMS ANALYSIS