Working Principle / Lifetime S-224/S-226 miniature tilt plat-forms are equipped with long-
S-224 · S-226
High-Speed Miniature Piezo Tilt Mirror (Beam Controller)
Ordering Information S-224.00 Piezo Tilt Platform 2.2mrad (4.4 mrad optical) with Mirror,
Open-Loop S-226.00 Piezo Tilt Platform 2.0mrad (4.4 mrad optical) with Mirror,
Closed-Loop Ask about custom designs! life, ceramic-encapsulated, high- performance PICMA
® piezodrives pushing a frictionless,
flexure-mounted platform. The
flexure is FEA (finite element
analysis) modeled for zero stic-tion, zero friction and excep-tional guiding precision; it also
serves as the pivot point and
preload for the
piezo actuator.Since drives and guides arefrictionless and not subject to
wear and tear, these units offer
an exceptionally high level ofreliability.
S-224 Tilt Mirror Sub-µrad Resolution Sub-Millisecond Response Up to 4.4 mrad Optical Beam Deflection Closed-Loop Versions for Better Linearity Includes BK7 Mirror Zero Friction Flexure Guiding System S-224/S-226 miniature tilt plat-forms are extremely fast and
compact tilt units, providing a
tilt range of 2.2 mrad and Notes See the “Selection Guide” on p. 3-8for comparison with
other steering mirrors.See “Piezo Drivers & Nanopo-sitioning Controllers” sectionfor our comprehensive line oflow-noise modular and OEM
control electronics for com-puter and manual control. sub-millisecond response. The S-224 and S-226 are delivered
with a Ø 15 x 4 mm BK7 glass
mirror. Open- and Closed-LoopOperation The S-224 is specifically de-signed for open-loop opera-tion. The S-226 closed-loopversion is available for highest
accuracy and repeatability. In
open-loop operation, the plat-
form’s angular position is
roughly proportional to the
drive voltage (see page 4-17inthe “Tutorial” section for be-
havior of open-loop piezos).Open-loop operation is ideal
for applications where the
position is controlled by data
provided by an external opticalsensor, a
Ccd camera, etc. The closed-loop version (S-226) allows absolute posi-
tion control, high linearity, andrepeatability based on the
internal ultra-high-resolutionfeedback sensor.
Application Examples Laser beam steering &scanning Beam switching Correction of polygon
scanner errors Laser beam stabilization
S-224, S-226 dimensions (in mm) © PI 1998-2005. Subject to change w/o notice. Cat 118 05/09.17 3-14