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Optical Galvanoters
- High-performance rotary motors for optical applications
- Fast and precise positioning
- Reliable and easy use
- Backlash-free rotor assembly
PRODUCT DESCRIPTION
1. OSSL SeriesGalvanometer Optical Scanners
The exceptional dynamics OSSLSeries scanners are the result of years of experience in developing andmanufacturing scanners, scan systems and scan solutions for industrial use. Themotor section of each OSSL series is ideally matched to the inertial load presentedby the mirror. The optimized rotor design is largely responsible for thefavorable dynamic properties and resonance characteristics. Axially pre-loadedprecision ball bearings guarantee a backlash-free rotor assembly with highstiffness and low friction. Special attention has been paid to long bearinglifetimes.
The optical positiondetector system is characterized by high resolution, as well as goodrepeatability and drift values. The scanners are equipped with heaters andtemperature sensors. This allows temperature stabilization for furtherenhancing long-term stability, even under fluctuating ambient conditions.
We provide all OSSL series scannerswith suitable mirrors and mirror coatings for all typical laser wavelengths. Inaddition to very good reflection properties, the mirrors are also optimizedwith respect to inertial load, stiffness and flatness. The high quality of OSSLSeries galvanometer scanners enables error-free operation in long-term andcontinuous use. Comprehensive measurements on custom test benches assure thatthe highest level of quality is continuously maintained.
Mounting
The rotationallysymmetrical flange facilitates mounting. The scanner housing must beelectrically insulated from the machine structure. Mirror stops are alreadyintegrated into the scanners. The mirror is directly bonded to the scanner’s shaft.
OSSL Series Galvanometer Scanners Specifications
Part number |
OSSL-XS |
OSSL-T |
OSSL-S |
OSSL-M |
OSSL-L |
Rotor inertia |
0.028 g·cm2 |
0.125 g·cm2 |
0.34 g·cm2 |
1.2 g·cm2 |
5.1 g·cm2 |
Torque constant |
2.3 N·mm/A |
5.3 N·mm/A |
7.5 N·mm/A |
15 N·mm/A |
24 N·mm/A |
Coil resistance |
3.9 Ω |
2.8 Ω |
2.7 Ω |
2.2 Ω |
0.85 Ω |
Coil inductance |
90μH |
145μH |
165μH |
275μH |
300μH |
Max. RMS current (max. case temp. 50°C) |
1.8 A |
2.2 A |
2.5 A |
3.5 A |
5 A |
Peak current |
6 A |
10 A |
10 A |
10 A |
15 A |
Weight With cable |
49 g |
72 g |
263 g |
340 g |
425 g |
Weight Without cable |
23 g |
46 g |
- |
- |
- |
Connector |
SD-9 socket |
SD-9 socket |
SD-15 socket |
SD-15 socket |
SD-15 socket |
Inertial Load recommended |
0.02 g·cm2 |
0.1 g·cm2 |
0.35 g·cm2 |
1.2 g·cm2 |
8 g·cm2 |
Inertial Load maximum |
0.05 g·cm2 |
0.5 g·cm2 |
1.5 g·cm2 |
6 g·cm2 |
25 g·cm2 |
Recommended Aperture |
7mm |
8.5mm |
10mm |
14mm |
20-30mm |
Step Response Time (with SSV30) 1% of full scale (settling to 1/1000 of full scale, with recommended inertial load) |
0.23 ms |
0.24 ms |
0.25 ms |
0.40 ms |
0.8 ms |
Dynamic Performance (with SSV30) Tracking error |
0.11 ms |
0.12 ms |
0.14 ms |
0.24 ms |
0.35 ms |
Recommended driver |
microSSV |
microSSV |
miniSSV microAIO SSV30 |
miniSSV SSV30 |
SSV30 |
OSSL Series Scanner Common Specifications(all angles are inmechanical degrees)
Optical Performance |
Maximum scan angle |
±12° |
Nonlinearity |
< 0.4 % ptp |
|
Offset drift |
< 15μrad/K |
|
Gain drift |
< 50 ppm/K |
|
Repeatability |
5μrad |
|
Position Detector (PD) |
Typical PD output signal - differential mode |
–11μA/° |
Typical PD output signal - common mode |
–140μA |
|
PD supply voltage |
6.5 V - 11.5 V |
|
PD supply current |
35 mA - 60 mA |
|
Heater |
Heater resistance |
120 Ω |
Temperature sensor resistance |
1000Ω@ 25°C,578Ω@40°C |
|
Cable |
|
0.22 m long |
Installation |
|
electrically insulated |
Operating Temperature |
|
25±20°C |
Electrical Connections (with SSV30) |
Power supply voltage |
±(15+1.5) V DC |
Input signals |
Alternative:±4.8 V;±9.6 V; ±4.8 mA;±9.6 mA |
|
Output signals |
3 status signals, TTL level |
|
Long-term drift over 8 hours (with SSV30) |
with temperature stabilization (after warm-up) |
< 0.6 mrad optical |
without temperature stabilization
|
<0.3mrad optical plus temperature induced gain and offset drift |
|
Operating Temperature (with SSV30) |
|
25±10°C |
2. CTI Series Optical Galvanometers
· Thecombination of our Moving Magnet Actuator technology and our innovativepatented Advanced Optical Position Detector design offers the highestpositioning speed and excellent accuracy in the smallest, lower cost closedloop galvanometers. Scanning system applications can be designed and optimizedfor speed, size, cost and accuracy with typical beam diameters in the 1 to 3mmrange.
· TheMoving Magnet Scanner's Positioning Speed comes from advanced galvanometer andactuator design for the highest system resonant frequency and RMS powercapability. The higher resonant frequency of our moving magnet actuator design,the intense magnetic field strength of state of the art neodymium-iron-boronmagnets and our advanced servo driver options allow superior system bandwidths,step response times and repetition rates with excellent wobble and jitterperformance.
· Ournewly patented advanced optical position detector design coupled with thepositioning precision of the moving magnet actuator provides excellentrepeatability and accuracy . The advanced optical position detector is designedto provide high positioning linearity, repeatability and stability over timeand temperature, and lower closed loop galvo cost in the smallest, most compactpackage.
· Superiorproduct lifetime and reliability result from disciplined design technique, thebest in bearing technology and quality manufacturing processes and workmanship.We take great pride in the performance of our products. Our scanner designs arecomputer modelled and have been life-test proven to billions of cycles ofoperation. Our high standards of manufacturing quality guarantees the performanceconsistency that you need to design the high quality systems demanded intoday's competitive marketplace.
Galvo Model |
Step Response Time
with mirror
|
Current RMS
Max at
50º C |
Torque Constant
Dyne-cm/Amp
± 10%
|
Scale Drift
ppm per °C
|
Zero Drift
µrad per °C
|
Linearity |
Short Term
Repeatability
µrad
|
6200H |
130us/3mm |
2.3 |
1.2 x 104 |
50 |
15 |
99.9% |
8 |
6210H |
100us/3mm |
2.4 |
2.79 x 104 |
50 |
15 |
99.9% |
8 |
6215H |
175us/6mm |
4.1 |
3.78 x 104 |
50 |
15 |
99.9% |
8 |
6220H |
195us/5mm |
3.9 |
6.17 x 104 |
50 |
15 |
99.9% |
8 |
6231HB |
210us/8mm |
5.8 |
1.11 x 105 |
50 |
15 |
99.9% |
8 |
6230H |
250us/10mm |
7.1 |
1.31 x 105 |
50 |
15 |
99.9% |
8 |
6240H |
350us/15mm |
8.2 |
2.00 x 105 |
50 |
15 |
99.9% |
8 |
6880 |
0.9ms/20mm |
7.5 |
2.54 x 105 |
50 |
10 |
99.9% |
8 |
6450 |
2ms/12mm |
1.8 |
.045 x 106 |
50 |
15 |
99.9% |
2 |
6650 |
3.5ms/20mm |
2.8 |
0.65 x 106 |
50 |
10 |
99.9% |
1.5 |
6900 |
6ms/50mm |
5 |
1.63 x 106 |
50 |
10 |
99.9% |
1.5 |
6400 |
8ms/75mm |
14 |
4.5 x 106 |
50 |
15 |
99.9% |
2 |
RecommendedGalvos by Beam Aperture
We have the widest range of galvos available inthe market giving our customers the flexibility to select a galvo to optimizeprice, performance, and footprint requirements of their application. Eachgalvo model, although ideally suited for a particular aperture, will alsooperate mirror sets larger and smaller than the optimum mirror set. In some applications, the user may choose to implement a smaller, less expensivegalvo to operate a larger mirror set as a cost-saving strategy while otherusers may opt for a galvo with "undersized" mirrors to maximize therotor stiffness for positioning performance considerations. The chartbelow lists the popular range of mirror apertures for each galvo model. Of course, some users also go outside these ranges to fully optimize theirapplication.