MPS Microsystems - Solutions for defense & aerospace - Presentation - Page 2
SOLUTIONS FOR OPTICS & PHOTONICS INDUSTRY
OPTOMECHANICAL SYSTEMS
A major challenge faced in the realization of high
performance optical devices with mobile elements is the
requirement for perfectly smooth and collinear movements
ensuring the successful transposition of complex software
optimizations in real optical functions.
Actuator technology platform with elimination
of lens misalignment
To answer that issue MPS has created a technology
platform for optical applications that shows very accurate
axis displacements combined with very long lifetime.
The precise relative positioning between two mobile lens
groups moving on the same axis and the perpendicularity
of a few tenth of a degree with the machine interfaces
is achieved with shortest stack-up and MPS specific micro
assembly skills (see below “Micro assembly”).
In the proposed solution, the precision needed in term of
concentricity and perpendicularity is performed in only one
component, which geometry is machined during the same
manufacturing process.
This technology can easily be customized to very different
sizes and specifications. The geometry tested so far is
reaching the following specifications (per lens):
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Stroke: 7.5 mm
Z- Pos. unidirectional repeatability: +/- 5 µm
Lateral deviation repeatability: +/-1 µm
Lens holder tilts repeatability: +/- 0.1 mrad
Possible technology customization:
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Additional mounting of 1” optical elements using
specific adapters
Single lens design
Scaling lens strokes and diameters upon request
Improved lens Z-positioning repeatability to +/- 1 µm
Motor selection related to frequency, speed and
acceleration requirements
Cam or linear ball screw drive mechanism regarding
the needed stroke and resolution
Cost vs Resolution, proposing the system in open loop
with a homing sensor
