Advanced Optics

Intuitive Left-to-Right Design Flow

	Use the full CAD interface for parameterized modelling of your structures. Link into the mechanical design flow by importing and manipulating files from various vendors (STEP, IGES, ..). Therefore, 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 where the surrounding support is built.
	In a second step, use the hierarchical UI to assign the different multi physical material properties to each component. Make use of a pre-defined material data base to increase your efficiency. The user can identify, on the geometrical model, surfaces for which the associated deformation will be exported to ZEMAX.
	The third step is to define the mesh of your structure. Take the most accurate and efficient approach by using the full spectrum of mesh shapes (tetrahedron, pentahedron, hexahedron,...), mesh orders (linear, quadratic) and mesh generation (Delaunay-Voronoi, Frontal, ...) methods.
	In the Opto-thermomechanical domain, you solve for the statics & transient response of your parameterized system. Move from verification to design by linking to optimization scripts or to Boss quatro for parametric analyses, design of experiments, multidisciplinary optimization, sensitivity & statistic analysis.
	After simulation, you will find the results in the solution tree of the hierarchical UI. The results can be 3D plots. Finally results are easily exported to other tools for further postprocessing. If available, optical performance indicators are displayed: the spot diagram; the wave front map; the merit function value.

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.

Structural deformations computed at the level of optical surfaces are automatically converted into information for ZEMAX. According to the working mode of ZEMAX and the type of surface selected, deformations can be converted into

• In the sequential mode of ZEMAX:
  • Zenike Fringe Sag
  • Zernike Standard Sag (up to 231 polynomials)
  • Grid Sag
• In the non-sequential mode of Zemax
  • Zernike Standard Sag

To control the shape of deformable mirrors with piezoelectric actuators or electrostatic effects, the Oofelie for Advanced Optics is compatible with the piezoelectric and electrostatic capabilities of Oofelie Mutliphysics.