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Technology – Purpose

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

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Technology – Purpose

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  1. Three-Dimensional Scanner for Archeological Artifacts patent pendingDaniel Hahn, Kevin Baldwin, Donald DuncanInventors

  2. 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

  3. Technology – Prototype Design Stationary Components Camera Projector Telecentric Lens Telecentric Adaptor Lens ND Filter V-block Mount Elevation Stage (stationary) Rotated Components Rotary Stage Optical Bench

  4. Technology – use photometric stereo to measure fine resolution shape (local) Rough sphere Cuneiform tablet

  5. Technology – use structured light to measure course resolution shape (global) 3/4 inch Cuneiform tablet

  6. Technology – algorithm developed to combine data sets into 3D model 25 µm xy resolution 2 µm z resolution 3/4 inch Cuneiform tablet

  7. 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)

  8. Commercial Applications • 3D data on any diffusely reflecting object: • Historical artifacts • Fossils • Gemstones (temporarily painted) • Rocks • Mechanical parts

  9. Commercial Opportunities • Measurement and recreation of mechanical parts • Forensics • Archiving / preserving historical artifacts • Scientific research

  10. Contact Information • For technical information contact: Daniel Hahn, Inventor 443-778-7404 daniel hahn@jhuapl.edu • For licensing information contact: Heather Curran, Technology Manager Office of Technology Transfer The Johns Hopkins University Applied Physics Laboratory 11100 Johns Hopkins Road Laurel, MD 20723 443-778-7262 heather.curran@jhuapl.edu www.jhuapl.edu/ott

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