industrial multiphysics design for optical devices

April 26th 2012 Industrial Multiphysics design for optical devices open

engineering 1

Erwin De Baetselier Business Development Manager

Philippe Saint-Georges Optical Engineer

Jean-François JAMOYE Project Manager

Coralie De Clercq Optical Engineer

Christian Barbier Head of Signal Laboratory

Industrial Multiphysics design for optical devices


engineering 2

Introduction

The importance of

integrated Opto-thermo-electro-mechanic design when it comes down to reliability and accuracy


engineering 3

Wide space activities in Belgium

Satellites, telescopes, opto-mechanical components…


engineering 4

Gravity effect & telescope movement

Parasite vibration

Temperature changes, convection (wind), radiation

Telescopes


engineering 5

Satellite optics

Fabricated on earth

Operating in space conditions

Strong temperature variations and gradients


engineering 6

On-board optical devices

Strong acceleration

Vibrations

Temperature


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Otpics working in harsh conditions

Resistance to shock

Wide temperature ranges


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Cell phone camera, webcam, autofocus …

Miniature optics & MOEMS

Always smaller and lighter

Heat dissipation

Electromagnetic crosstalk with other components

MEMS smaller, low power, fast and precise


engineering 9

Lighting & display

More and more LED devices

Thermal management at the package & system levels

Increase efficiency, lifetime

and color stability


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Solar concentrators

Deformation of the light concentrator (mirrors, prisms, lenses, …)

Stress in the mechanical parts

New designs are optimized to increase efficiency


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Astronomy (telescopes)

Microscopy Ophthalmic imaging Lasers applications (beam shaping for micromachining, welding, …)

Active/adaptive optics (AO)

Wave front correction for:

environmental perturbation

atmospheric turbulence


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Laser welding, printing, micromachining Optical disk Medical applications

The power, wavelength, beam shape and polarization state have to be controlled, taking care of:

Lens effect

Birefringence

Laser applications


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Telecom Fiber optic sensors Optical interconnections Integrated optics

Polarization state and laser modes to be well controlled

Thermo-optic effect (dn/dT)

Strain/stress induced birefringence

Optical fibers & micro-optics


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A very high accuracy in the production of mirrors and lenses is now very often available

the same kind of accuracy is

mandatory in the (electro-)mechanics for mounting and controls

High precision opto-mechanics


engineering 15

Design of complex optical systems

Optical performance prediction & optimization

complete design process

Structural & thermal analyses

Deformation

Stress

Temperature field

Electro-mechanical effects (e.g. piezoelectric)

Optical post-treatment Thermo-optic effect (dn/dT) GRIN

Strain/stress induced birefringence

Optical response analyses (ray-tracing software)


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Multiphysical analyses correlated with Measurements

Multiphysical modeling

Structural

Thermal Electro-

kinetics

Optical

analyses Wavefront aberration,

Modulation transfer function, ...

Conduction,

convection,

radiation

Electrostatic,

electromagnetism

Temperature Piezoelectric

Stress,

deformation,

vibration

Interface program

Structural

optimization

Surface deformation,

Stress-birefringence,

Refractive index gradient

industrial multiphysics design for optical devices

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