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Galvanometers

QuantumScan - 30

Moving Magnet Galvanometer

  • Ceramic Rotor for Faster Step Response
  • Thermally De-Coupled Stator for Lower Drift
  • SLR Stator Design for Higher Bandwidth
  • Patent Pending Ceramic Rotor For Faster Step Response
  • Thermally De-Coupled Stator For Lower Drift
  • SLR Stator Design For Higher Bandwidth
  • 4X Greater Position Feedback Signal for Higher Accuracy

Nutfield Technology's QuantumScan-30 (QS-30) galvanometer scanners are used to position laser beams fast and accurately over millions of cycles. The limited rotation moving magnet motor is coupled to a highly sensitive position detector. The device is controlled through a PID based servo driver to provide amazingly fast and accurate closed loop control.

NTI's engineers are veterans of the scanning industry and have been designing galvos for two decades. They have been continuously researching ways to improve scanner performance, which has lead to several patents and patent pending designs including our exclusive ceramic rotor designs. This first of a kind rotor has exceptionally low inertia and high stiffness, which results in higher bandwidth performance. The QS-30 uses high quality bearings with tested and patent pending bearing preload designs to ensure a long lifetime of operation.

The QS-30 Position Detector was designed close to the mirror for the best possible accuracy. Further position detector refinements give the QS-30 galvanometer up to 10 times greater signal-to-noise; the highest in the industry. This means greater pointing accuracy and repeatability in your application.

 
 
  Suitable For Laser Based:
  • Large Aperture Marking
  • Large Aperture Drilling
  • Large Aperture Label Cutting
  • Rapid Prototyping

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The galvanometer's stator is thermally isolated and located far away from the position detector. This reduces thermally induced drift; a patented feature found only in NTI galvanometers.

Another patented breakthrough is our stator design, which is the first to incorporate Side Load Reduction (SLR) technology to reduce off axis magnetic forces on the rotor. The benefit is higher bandwidth and faster step response resulting from less stator induced side forces.

During each assembly step, every galvo is rigorously tested and then burned in to ensure the highest quality. A device history record follows every galvo assembly recording important operational parameters along the way. Data is stored on a hard copy form and in a computerized data base. Data on each galvo is then compared against acceptable limits of operation.

Each NTI galvanometer is configurable with a variety of control electronics and mirrors of many sizes and wavelengths. QS-30 galvanometers can also be configured in an X/Y Open Frame Head. These "drop in" OEM heads arrive with match tuned servo drives, mounted mirrors, optically aligned and ready for easy integration into your laser system.

Nutfield Technology provides a range of PC, 16-bit digital and analog control options to meet your time to market and budget requirements. Call us today to find out how we can help customize a solution for your application.

SPECIFICATION

UNITS

PERFORMANCE

Excursion

Degrees Optical

+/- 48

Rotor Inertia

Gram·Centimeters²

5.1

Recommended Beam Apertures

Millimeters

20 - 50

Small Step Response (5.8 gm*cm² load)

Microseconds

(Matched Inertia Load) 650

Torque Constant

Dyne*cm/Amp

2.8*10 5

Coil Inductance

Micro Henrys

(at 1000Hz) 450

Coil Resistance

Ohms

5.8

Angular Sensitivity

Micro Amps/Degree

100

Repeatability

Micro Radians

2

Linearity (+/- 20 degrees)

Percent, Minimum

99.9

Zero Drift

µrad./degree C, Max

9

Gain Drift

ppm/degree C, Max

30

 

 

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