OOFELIE::Multiphysics link to ZemaxOpticStudio

The OOFELIE::Multiphysics Solver is tightly combined with ZemaxOpticStudio through automated in-memory data exchange to help engineers accurately predict the behavior of optomechanical systems and MOEMS.

Presentation of the link with OpticStudio

In a variety of optical applications, optical designs have to be combined with thermo-mechanical matters. For this reason, the OOFELIE::Multiphysics Solver automatically links to the well-known optical design software ZemaxOpticStudio.

While combining data from finite element analyses with ray-tracing tools typically requests time-consuming human operations, the automated in-memory data exchanges between OOFELIE::Multiphysics and ZemaxOpticStudio will guarantee you a fast, easy-to-use, and reliable design flow.
Beyond the so-called “STOP” (Structural Thermal Optical Performance) analyses, this integrated solution also offers advanced modeling capabilities for the design of complex electro-optic devices such as MOEMS, including their steering mechanisms and active/adaptive optics.


To interact with the optical design software ZEMAXOpticStudio, OOFELIE::Multiphysics was provided with the following capabilities:

  • Automated in-memory data exchanges with ZEMAXOpticStudio
  • Easy optical CAD export from ZEMAXOpticStudio to OOFELIE::UI for further modeling
  • Irradiance exchange to calculate power dissipation in the components
  • Expression of structural deformations exchanged with ZEMAXOpticStudio as:
    • A linear combination of Zernike polynomials.
    • A grid of points.
  • Separation of the rigid body component
  • Automated modification of the optical problem
  • Automated retrieval of optical performance indicators

OOFELIE::Multiphysics link to Simcenter 3D

The OOFELIE::Multiphysics Solver is operated from Simcenter 3D, the simulation environment of SIEMENS. This integrated solution provides  strongly coupled multidisciplinary analysis of a broad range of transducers, MEMS, microsystems, and optical devices products in the aeronautics, space, defense, automotive, shipbuilding, and consumer electronics markets

Key features

HighlightsApplication Examples

  • Integrated design flow
  • Industry Standard Designflow
  • Zemax’ OpticStudio irradiance map used for automatic surface heat flux calculation
  • Deformation export at surface level
  • GRIN: Refractive index gradient as a function of temperature
  • Active optics
  • Aero-optic effects
  • Industrial multiphysics design for optical devices

Optical and multiphysics co-simulation analysis in:

  • Lasers
    • Beam homogenizer
    • Lens barrel
  • Adaptive optics
    • Deformable mirror
    • Scanning micro-mirror
    • Bilayer micro-mirror
  • Telescope
  • Head-Up Display
  • Missile seekers

Available features for this vertical application


The following physical fields are available in OOFELIE::Multipysics.

MechanicalThermalElectrical (option)Fluids (option)Topology Optimization (option)

  • Static and transient
    • Linear and non-linear
  • Modal
    • Real and complex
    • Wet-mode shapes
  • Harmonic
  • Random vibrations
  • Strength assessment
  • Topology optimization
    • Density based (SIMP)
  • Iso- and orthotropic materials:
    • Viscous, viscoelastic and structural damping
  • Perfectly matched layers (PML)
  • 3D modelling
  • (Oriented) Volume, membrane, shell, rod, beam, lumped mass elements
  • Large displacements & pre-stress
  • Identical nodes, contact, perfect/non-perfect mechanical gluing, rigid body assemblies, mean
  • Special effects:
    • Coriolis
    • Centrifugal
  • 2-ways coupling with:
    • Thermal field
    • Electrical field
  • 1-way coupling with optics

  • Static (steady-state) and transient
    • Linear and non-linear
  • Topology optimization
    • Density based (SIMP)
  • 3D modelling
  • Identical nodes, perfect/non-perfect thermal gluing, thermal contact admittance
  • 3D mutual radiation (ray tracing)
  • Orbital model
  • 2-ways coupling with
    • Mechanical field
    • Electrical field

  • Static and transient;
    • Linear and non-linear
  • FEM / BEM coupling
  • Dielectric materials
  • Identical nodes
  • Perfect/non-perfect electrical gluing
  • RLC, electric dipole elements
  • 2-ways coupling with
    • Mechanical field
    • Thermal field

  • Static and Transient
    • Linear
    • Non-linear
  • Any gas or liquid material (Newtonian behaviour)
  • 3D, 2D planar and axisymmetric modelling
  • Symmetry planes
  • Incompressible & Boussinesq Law
  • Boundary conditions
    • Velocity and temperature at inlet
    • Pressure at outlet
  • Boundary conditions
    • Non-slip flow
    • Surface heat flux or temperature at walls
  • 2-ways coupling with mechanical and thermal fields

  • Physics
    • Mechanical
    • Thermal
  • Static analysis
  • Gradient based method with MMA optimizer
  • Density-based approach
  • Adjoint variable method for sensitivities computation
  • Advanced SIMP laws
  • Multimaterial with or without void
  • Manufacturing constraint:
    • Minimum member size
    • Overhang
  • Filters on:
    • Sensitivities
    • Densities
  • Various objective and constraint functions
    • Volume (Total or On specific material)
    • Total mass
    • Mechanical compliance
    • Thermal compliance
    • Displacement on points
    • Rotation on points
    • Temperature on points
    • Eigen frequencies
  • Uncertainty quantification in the model related to
    • Loads definition
    • Material properties specifications


The following couplings are accessible in OOFELIE::Multipysics.

Thermo-MechanicsOpto-Thermo-MechanicsCoupled Electrostatics-Mechanics (option)Piezoelectrics (option)

  • Static and Transient
    • Linear and non-linear
  • Complex Modal and Harmonic
  • 3D modelling
  • Thermo-elastic iso- and orthotropic materials
  • Thermo-elastic damping effect
  • Thermal dependency of material properties
  • 2-ways coupling with electric field
  • 1-way coupling with optics

  • Coupling with Zemax’ OpticStudio
    Automated data exchange via in-memory dialog
  • Description of surface deformations:
    Zernike Standard or Fringe polynomials, grid of points, all aperture types
  • Rigid body motion recognition and ability to export separately to Zemax’ OpticStudio
  • Thermo-optic effect:
    • Accounting for refractive index change as a function of Temperature.
  • Computation and visualization of refractive index gradients inside lenses.
  • Automated exportation to Zemax’ OpticStudio

  • FEM/BEM coupling
  • Mesh morphing
  • Fast Multipole Methods for BEM
  • Pre-stress
  • Pull-in voltage computation

  • Static and transient
    • Linear and non-linear
  • Modal and harmonic
  • Piezoelectric materials:
    • Hexagonal C6
    • Trigonal D3
    • Triclinic C1
  • Perfectly matched layers (PML)
  • (Oriented) Volume, membrane, shell
  • 2-ways coupling with thermal
  • 1-way coupling with optics

Application example

Position Control of a Segment of the E-ELT

Position Control of a Segment of the E-ELT

Position Control of a Segment of the E-ELT Introduction The application shows how to use a multiphysics software solution to perform an integrated simulation of multiphysics controlled systems. In this particular case, a control loop is implemented...