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Material and design choices for a
small movement optical system
Burton Bruce
Current art
Piezo electric systems
Flexure based systems
Some criteria for the trade study
In the field of micro optics there are the same requirements for a precision
optical platform. These requirements in general are:
Stability;
the precision optical platform needs to stay exactly where it is put until an
effort is made to move it.
Repeatability;
the precision optical platform needs to be able to be moved and then moved
back to the same location within the range of motion throughout the life time
of the system.
Orientation Independence;
many times it is unknown what orientation relative to the gravity field will be
the final orientation of the precision optical platform and the supporting
structure and mechanism.
Small size;
just as there has been a revolution in microelectronics over the last quarter
century there has been a lesser revolution of micro optics. It is inadequate to
have a 200 gram 5cm X 5cm X5 cm cube supporting such small optics. It
would be like tubes in your cell phone.