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Optical Path Control, Beam Steering & Image Stabilization with Lower Cost Piezo Controller

09-04-2009 07:21 PM CET | Science & Education

Press release from: PI (Physik Instrumente) L.P. Piezo Nano Positioning

E-616 OEM controller with S-330 steering mirror platforms and E-616 bench-top with S-334 steering mirror

E-616 OEM controller with S-330 steering mirror platforms and E-616 bench-top with S-334 steering mirror

Auburn, MA, Piezo system specialist PI has extended its E-616 multi-channel controller line for piezo based steering & stabilization mirror platforms. Four open and closed-loop models are now available in bench-top and OEM module versions. The closed-loop units contain two servo controllers, sensor circuit channels and 3 power amplifiers.

Features and Advantages of the E-616 Multi-Axis Controller
 Three Integrated Amplifiers Provide up to 10 W Peak Power
 Closed-Loop and Open-Loop Versions
 Bench-Top and OEM Modules
 Internal Coordinate Transformation Simplifies Control of Parallel Kinematics Designs (Tripod & Differential Drive)

Datasheet:
http://www.physikinstrumente.com/en/news/fullnews.php?newsid=160

Piezo Steering Mirrors: Why?
Piezo steering mirrors are faster than galvo mirror scanners and provide improved resolution and stability due to their high-stiffness, solid-state piezo drives. They are used to steer or stabilize beams or enhance image resolution. Applications range from optical commumication, astronomy and super-resolution microscopy to nano-lithography.

Tripod and Quadra-Pod Differential Drive Versions
The controllers can drive parallel-kinematics (highest performance mechanics, where all piezo actuators are connected to the same moving platform) steering mirror designs. With the tripod design (for S-325 Z/Tip/Tilt mirrors), the platform is driven by three piezo actuators at 120° spacing. The quadra-pod differential drive design (as used in the S-330, or S-334 mirror models) runs two orthogonal axes with a fixed pivot point based on two pairs of actuators operating in push / pull-mode. The differential evaluation of two sensors per axis improves linearity, stability and resolution.

Internal Coordinate Transformation Simplifies Control
Parallel-kinematics requires the transformation of the commanded tilt angles into the corresponding linear motion of the individual actuators. In the E-616, this is taken care of by an integrated circuit, eliminating the need of additional external hardware or software. Additionally, with the E-616.S0 tripod version, all actuators can be commanded by an offset-voltage simultaneously. As a result, a vertical movement, for example for optical path length tuning, is obtained.

Simple Setup and Operation
To facilitate integration, setup and operation the E-616 features both front and rear panel connections: The 25 pin sub-D piezo & sensor connector is located on the front, along with offset trim pots and LEDs for Power and Overflow. A 32-pin rear connector allows commanding and reading the sensor and amplifier monitor outputs

About PI
PI is a leading manufacturer of piezo systems, piezo linear motors and precision motion-control equipment for photonics, bio-nanotechnology & semiconductor applications. PI has been developing and manufacturing standard & custom precision products with piezoceramic and electromagnetic drives for 35+ years. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with eight subsidiaries and total staff of 500+

PI (Physik Instrumente) L.P.
16 Albert St.
Auburn, MA
01501
USA

USA / Canada: www.pi-usa.us

East: David Rego
Tel: (508) 832-3456
Fax: (508) 832-0506
Email: info@pi-usa.us
Midwest Joe McGonagle
(815) 793-3776
Email: info@pi-usa.us

West David Steinberg
Tel: (949) 679-9191
Fax: (949) 679-9292
Email: info@pi-usa.us

Europe: www.pi.ws
Germany: +49 (721) 4846-0
Italy: +39 (02) 665 011 01
France: +33 (1) 481 039 30
UK: +44 (1582) 764 334

Asia: www.pi-japan.jp
Japan: +81 (6) 6304 5605
China +86 (21) 687 900 08

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