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April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 1
Open Engineering: Strongly Coupled Multiphysics
OOFELIE::Multiphysics Multiphyiscs CAE Consulting
•Sensors And Actuators
•Multiphysics FSI
Vibro Acoustics, Electro- Technics,
FSI-CFD, Opto-Thermo Mechanics,
Thermo Mechanics
April 26th 2012 Industrial Multiphysics design for optical devices open
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 3
Deformation, stress,
temperature
OOFELIE Finite element thermo-mechanical analyses
Optical surface aberrations,
refractive index change
ZEMAX Optical analyses
Optical response
Redesign OOFELIE Optical post-processing
Dynamic Data Exchange
OOFELIE::Multiphysics linked to ZEMAX
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 4
About ZEMAX
ZEMAX is a popular and powerful optical software used by optical engineers for the design of optical systems:
Cameras
Telescopes
Illumination devices
MOEMS
Diffractive optics
Waveguides
...
Sequential & non-sequential modes available
Physical optics propagation available
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 5
Mechanical loads, e.g. gravity effects
Large terrestrial telescopes
Space optics
…
Thermo-mechanical effects
Global temperature changes, thermal gradients, radiative transfers, ...
Difference of thermal expansion coefficients
stresses and deformations
Piezoelectric & electrostatic actuators: active optics
Astronomy
Medical imaging
Laser applications
Telecommunication
...
Main fields of application
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 6
Simulation examples…
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 7
Gravity effect on Mirrors & Telescopes
Parabolic mirror
Un-obscured telescope
g
Fixed by support
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 8
Thermo-mechanical analyses on mirrors
Mirror deformation due to heating and thermal expansion
un-matching
Heating
Fluid Cooling
Experimental test case measured by AMOS
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 9
Satellite Optics – Three Mirror Telescope (TMA)
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 10
Thermo-mechanical stresses and deformation of a lens in a mount
Thermo-mechanical analyses on lens components
Experimental test case measured by CSL
Temperature Distribution
Stress Deformation
Fixed
Fixed
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 11
Complete opto-thermo-mechanical analyses
Pre-Stresses Heating Deformation Change of refractive index Optical performances fully analyzed in ZEMAX updated model
Deformation
Axial refractive
index gradient
Spot
diagram
Wavefront
error
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 12
BEM Electrostatic example using FMM
Electrostatically actuated micro-lens for biomedical application (With courtesy of University of British of Columbia and British Columbia Cancer Research
Centre, CANADA)
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 13
MOEMS
Another example of micro-mirror simulation
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 14
Micro-Projector Modeling & Optimization
April 26th 2012 Industrial Multiphysics design for optical devices open
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Flexible mirror with piezoelectric actuators
Zernike coefficients automatically
exported to ZEMAX
Piezoelectric actuation simulated in OOFELIE
April 26th 2012 Industrial Multiphysics design for optical devices open
engineering 16
Modelling the Position Control of a Segment of the E-ELT using