Ultra-Fast Piezo Tip / Tilt Platforms

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The product You were Looking for was moved Click Here for new Address S-340 Ultra-Fast Piezo Tip / Tilt Platforms 2 mrad θX and θY Tilt Range For Mirrors to 100 mm Ø Sub-µrad Resolution Closed-Loop Versions Differential Design for Excellent Temperature Stability S-340 piezo tip/tilt platforms are fast and compact tilt units, providing precise angular movements of the top platform in two orthogonal axes. The tilt range is 2 mrad (±1) (each axis) with sub-µrad resolution. Closed-loop versions are available for highest accuracy and repeatability. S-340 systems are designed for mirrors up to 100 mm diameter and have outstanding angular stability over a wide temperature range. To match the CTEs (coefficients of thermal expansion) of various mirror materials, platforms made from different materials are available (see ordering information). Working principle S-340 tip/tilt platforms are equipped with two pairs of low-voltage piezoelectric linear drives (0 to 100 V) operating as a unit in push/pull mode (see link for schematic diagram). The aluminum case is equipped with an integrated, FEA-modeled (finite element analysis) circular flexure featuring zero stiction, zero friction and exceptional guiding precision. In open-loop operation, the platform angle roughly corresponds to the drive voltage (see link in the "Tutorial"section for behavior of open-loop piezos). The open-loop models are ideal for applications where the position is controlled by an external loop, based on data provided by a sensor (e.g. PSD quad cell, CCD chip, ...). The closed-loop versions are equipped with two pairs (one per axis) of LVDT (linear variable differential transformer) sensors operated in a bridge circuit for ultra-high resolution and angular stability. They provide sub-µrad resolution and repeatability (with PI control electronics). Materials Match Image stabilization Laser beam stabilization Beam switching Adaptive optics systems Laser beam steering & scanning Correction of polygon scanner errors. Drive Electronics for High-Level Dynamic Applications E-500 chassis with 2 x standard and 1 x specially configured E-505.00 amplifier modules, specially configured E-509.L3 position servo-controller module (required for closed-loop operation, see link in the "PZT Control Electronics" section for details). Drive Electronics for Medium-Level Dynamic Applications E-500 chassis with specially configured E-503.00 amplifier module, specially configured E-509.L3 position servo-controller module (required for closed-loop operation, see link in the "PZT Control Electronics" section for details). Platform Recommended Models Mirror Aluminum Aluminum S-340.Ax Invar Zerodur glass S-340.ix Titanium BK7 glass S-340.Tx Steel S-340.Sx S-340.AL Tip/Tilt Platform S-340 dimensions (in mm) S-340 schematic diagram

Technical Data

Models	S-340.A0	S-340.AL	Units	Notes see link
Active axes	θX,θY	θX,θY
Open-loop tilt angle 0 to 100 V	2 (±1)	2 (±1)	mrad ±20%	A2
Closed-loop tilt angle ³	-	2 (±1)	mrad	A3
Integrated feedback sensor	-	4 x LVDT		B
Closed-loop / open-loop ***resolution £	- / 0.1	0.5 / 0.1	µrad	C1
Closed-loop linearity (typ.)	-	±0.1	%
Full-range repeatability (typ.)	-	±1	µrad	C3
Electrical capacitance	7.2 / axis	7.2 / axis	µF ±20%	F1
* Dynamic operating current coefficient (DOCC)	0.45 / axis	0.45 / axis	µA/(Hz x µrad)	F2
** Unloaded resonant frequency (f0)	1.4	1.4	kHz ±20%	G2
** Resonant frequency w/ Æ 50 x 15 mm glass mirror	0.9	0.9	kHz ±20%	G3
** Resonant frequency w/ Æ 75 x 22 mm glass mirror	0.4	0.4	kHz ±20%	G3
Distance, pivot point to platform surface (T)	7.5	7.5	mm
** Platform moment of inertia	18000	18000	g·mm²
Operating temperature range	- 20 to 80	- 20 to 80	°C	H2
Voltage connection	3 x VL	3 x VL		J1
Sensor connection	-	2 x L		J2
Weight (w/o cables)	335	335	g ±5%
Material (case / platform)	Al / depends on version	Al / depends on version		L
* Dynamic Operating Current Coefficient in µA per hertz and µrad. Example: Sinusoidal scan of 100 µrad at 10 Hz requires approximately 0.45 mA drive current. ** Value for aluminum top plate. Lower resonant frequency for other platforms due to higher moment of inertia: titanium: +60%; invar: +200%; steel: +190%. *** Resolution of PZT tip/tilt platforms is not limited by friction or stiction. Noise equivalent motion with E-503 amplifier.

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S-340.A0
θXθY Piezo Tip/Tilt Platform, 2 mrad,
Aluminum Top Plate

S-340.i0
θXθY Piezo Tip/TiltPlatform, 2 mrad,
Invar Top Plate

S-340.S0
θXθY Piezo Tip/Tilt Platform, 2 mrad,
Steel Top Plate

S-340.T0
θXθY Piezo Tip/Tilt Platform, 2 mrad,
Titanium Top Plate

S-340.AL
θXθY Piezo Tip/Tilt Platform, 2 mrad,
Aluminum Top Plate, Closed-Loop

S-340.iL
θXθY Piezo Tip/Tilt Platform, 2 mrad,
Invar Top Plate, Closed-Loop

S-340.SL
θXθY Piezo Tip/Tilt Platform, 2 mrad,
Steel Top Plate, Closed-Loop

S-340.TL
θXθY Piezo Tip/Tilt Platform, 2 mrad,
Titanium Top Plate, Closed-Loop

Custom Designs
for Volume Buyers