three-dimensional scanner for archeological artifacts patent pending daniel hahn, kevin baldwin,...
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Three-Dimensional Scanner for Archeological Artifacts
patent pending
Daniel Hahn, Kevin Baldwin, Donald Duncan
Inventors
Technology – Purpose
• Obtain 3D data on the scale of 1-50 µm using a non-contact method– Laser scanners bottom out at ~50 µm– White-light interferometers, amongst other
techniques, are sub-micron– Profilometers are contact instruments and
can get “stuck” on sharp features
Technology – Prototype Design
Optical BenchRotary Stage
ElevationStage(stationary)
V-block Mount
ND Filter
Telecentric Lens
Camera
Projector
TelecentricAdaptor Lens
RotatedComponents
StationaryComponents
Technology – use photometric stereo to measure fine resolution shape (local)
Cuneiform tablet
Rough sphere
Technology – use structured light to measure course resolution shape (global)
Cuneiform tablet
3/4 inch
Technology – algorithm developed to combine data sets into 3D model
Cuneiform tablet
3/4 inch
25 µm xy resolution2 µm z resolution
Technology Applications
• Can be used to scan any diffusely reflecting object
• Scalable to achieve wide range of object sizes and resolutions
• Produces very accurate 3D data set (2 µm z-resolution, 25 µm x,y-resolution)
Commercial Applications
• 3D data on any diffusely reflecting object:– Historical artifacts– Fossils– Gemstones (temporarily painted)– Rocks– Mechanical parts
Commercial Opportunities
• Measurement and recreation of mechanical parts
• Forensics• Archiving / preserving historical artifacts• Scientific research
Contact Information
• For technical information contact:
Daniel Hahn, Inventor443-778-7404daniel [email protected]
• For licensing information contact:
Heather Curran, Technology ManagerOffice of Technology TransferThe Johns Hopkins UniversityApplied Physics Laboratory11100 Johns Hopkins RoadLaurel, MD [email protected]/ott