Have you question, what's the best scanner for my measurement job? Attendees of the CMM Knowledge Tour 2013 discovered the pros and cons of both these scanning devices. Now you can discover what device is best for your job.

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Steinbichler COMET LSteinbichler COMET LƎƎD 2M vs RS2D 2M vs RS2
integrated scanner on Romer armsintegrated scanner on Romer arms

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• Absolute Arm with high accuracy Absolute encoders
• Zero-G counter balance with lock
• TESA Probe kit including:
– TESA Probe 15mm
– TESA Probe 6mm
– TESA Probe 3mm
• ROMER Scanning Pack
• RS 2 integrated laser
• No external controller
• Optional WiFi
• Magnetic Base and Spin Grips (75xx series)
• Dust cover
• Travel case with wheels
• Certified Length bar (75xx series)
• Certified sphere with inspection report
• RDS software and documentation
ROMER SI-armsROMER SI-arms

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Tripod L DƎTripod L DƎ
COMET L D rotary headƎCOMET L D rotary headƎ
STEINBICHLER COMETSTEINBICHLER COMET
Tripod COMET 5Tripod COMET 5

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STEINBICHLER COMET OptionsSTEINBICHLER COMET Options
COMET rotaryCOMET rotary dual axisdual axis COMET rotary 150 / 800COMET rotary 150 / 800
cable for COMET rotarycable for COMET rotary
COMET rotary 30 / 460COMET rotary 30 / 460

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RS2 Scanner TechnologyRS2 Scanner Technology
How does RS2 work?
• Project a flat plane of tuned laser light
• Capture the reflection from the object with a 2D camera
• Extract the line from the image

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RS2 BenefitsRS2 Benefits
• Fully integrated with arm wrist
• Laser power teach function for different colors,
• Semi- Automatic laser control
– Able to scan multicolor parts in one pass
– High tolerance to ambient light
• Small triangulation angle (24 degrees)
– Able to access narrow cavities in complex parts
• Ability to scan difficult materials like carbon fibre
• Contact probing also possible using the arm

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CalibratedCalibrated
projector withprojector with
PhaseShift technologyPhaseShift technology
for subpixel resolutionfor subpixel resolution
CCD CameraCCD Camera
ProjectionProjection
Center 1Center 1 ProjectionProjection
Center 2Center 2
Triangulation BaseTriangulation Base
xx
yy
zz
STEINBICHLER COMET Single CameraSTEINBICHLER COMET Single Camera
TechnologyTechnology
Accuracy of a single camera sensor with aAccuracy of a single camera sensor with a
calibrated projector gives highly exact 3D coordinatescalibrated projector gives highly exact 3D coordinates
and high lateral resolutionand high lateral resolution
For each camera pixel:For each camera pixel:
Intersection of a beam (vector)Intersection of a beam (vector)
and the projector planeand the projector plane
Intersection of vector and planeIntersection of vector and plane
is clearis clear
Integration over exactly oneIntegration over exactly one
camera pixel gives best possiblecamera pixel gives best possible
3D coordinates3D coordinates

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COMET L3D BenefitsCOMET L3D Benefits
Ultra-portable
•Compact design (165 mm x 430 mm x 210 mm)Compact design (165 mm x 430 mm x 210 mm)
•Lightweight (sensor less than 6 kg)Lightweight (sensor less than 6 kg)
•Portable packaging with compact cardboard box or robust trolley casePortable packaging with compact cardboard box or robust trolley case
Simple and fast system handling
•Fixed baseFixed base
•Easy and quick change of FOVEasy and quick change of FOV
•Fast system calibrationFast system calibration
Innovative Blue-LED lighting technology
•High light powerHigh light power
•Less reflectionLess reflection
•High durabilityHigh durability
Sensationally fast 3D Data acquisition

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KEY SPECS
Feature COMET L3D 2M RS2
Measuring Volume (mm) 100(100x75x60),
200(215x165x140),
400 (400x300x250)
Depends on the arm
measuring range
Point to point spacing
(microns)
60um/135um/150um
(100/200/400)
46um
Line width Depending on the FOV 65mm
Line rate Fastest measuring time 1.5s 50Hz
Power Control No Semi-automatic per
line
Controller box Yes No
Automatic Object
Positioning
Yes with optional rotary table No

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Typical Applications for ROMER SI
ARM (RS2)
• Inspection and Reverse engineering
applications
• Small to medium sized parts
• Raw castings
• Machined surfaces
• Single colour parts e.g clay, sheet metal,
fabric
• Mixed surfaces/finished parts e.g automotive
• Complex parts with cavities e.g machined
engine block

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Typical applications for COMET
 Simple user interfaceSimple user interface
 Full control of measuring process including post processingFull control of measuring process including post processing
 Flexible and unique matching strategiesFlexible and unique matching strategies
 Free MatchingFree Matching
 Sticking of markers is obsolete; depends on object!Sticking of markers is obsolete; depends on object!
 Tie Point MatchingTie Point Matching
 With two markers minimum, additional orientationWith two markers minimum, additional orientation
using areal informationusing areal information
 no photogrammetry necessaryno photogrammetry necessary
 Rotary Matching (with or without reference points)Rotary Matching (with or without reference points)
 Single measurements are read out automaticallySingle measurements are read out automatically
via angle informationvia angle information
 Reference Point MatchingReference Point Matching
 Using measurement points acquired by aUsing measurement points acquired by a
photogrammetry systemphotogrammetry system
 Matching with scale barsMatching with scale bars
 Matching with flexible referencesMatching with flexible references
 All matching strategies can be used in one projectAll matching strategies can be used in one project

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Helmet scanned with Romer 7525 SI w.
RS2

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Helmet scanned with Comet LƎƎD

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