Abstract

Up to now, Microdisplays are mainly used in multimedia applications or head-mounted displays. Due to their interesting properties, these displays open more and more alternative application fields, for example, in optical metrology. Projection lenses for this application area have to be specially designed, because the requirements for these systems differ completely from those for multimedia applications. The lenses must have very low geometrical image distortion and they have to be adapted to small objects and/or image distances. On the other hand, they often work with light sources with small spectral bandwidths; consequently they do not need to be corrected for chromatic aberrations. In addition, the numerical aperture (NA) has to be large enough to collect and transfer as much light as possible. Secondary the size of the projection lens has to be as small as possible to ensure compact measurement systems. All these requirements lead to a compromise in optical lens and system design.Within this paper, the development and realization of a 3D-scanner for the registration of dental surfaces directly inside the patient's mouth is presented. The advantages of such an intraoral scanning system are the reduced pain level for the patient and the absence of extensive intermediate steps. The production of prosthesis can be performed directly after measurement. Thus a quality improvement can be obtained as well as a reduction of the efforts in time and costs.

© 2011 IEEE

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  1. M. S. Brennesholtz, E. H. Stupp, Projection Displays (Wiley-SID Series, 2008).
  2. G. Notni, W. Schreiber, M. Heinze, G. H. Notni, "Flexible auto calibrating full-body 3D measurement system using digital light projection," Proc. SPIE (1999) pp. 79-87.
  3. G. Frankowski, M. Chen, T. Huth, "Real-time 3D shape measurement with digital stripe projection by texas instruments micromirror devices DMD ™," Proc. SPIE (2000) pp. 90-105.
  4. P. Kuehmstedt, C. Braeuer-Burchardt, C. Munkelt, M. Heinze, M. Palme, I. Schmidt, J. Hintersehr, G. G. Notni, "Intraoral 3D scanner," Proc. SPIE (2007) pp. 67620E.
  5. P. Kuehmstedt, G. Notni, J. Hintersehr, J. Gerber, "CAD-CAM-system for dental purpose – An industrial application," Proc. Fringe'01 (2001) pp. 667-672.
  6. S. Riehemann, U. Lippmann, M. Palme, C. Grossmann, P. Kuehmstedt, G. Notni, "Microdisplay-based industrial 3-D and microstructure measurement systems," J. SID 17/7, 597-602 (2009).
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  8. G. H. Notni, P. Kuehmstedt, M. Heinze, G. Notni, "Simultaneous measurement of 3D shape and color of objects," Proc. SPIE (2002) pp. 74-82.
  9. G. H. Notni, G. Notni, "Digital fringe projection in 3D shape measurement—An error analysis," Proc. SPIE (2003) pp. 372-380.
  10. P. Kuehmstedt, C. Munkelt, M. Heinze, C. Braeuer-Burchardt, G. Notni, "3D shape measurement with phase correlation based fringe projection," Proc. SPIE (2007) pp. 66160B.
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  14. S. Riehemann, M. Palme, P. Kuehmstedt, G. Notni, "LCoS based projection systems for optical metrology," SID Symp. Dig. (2003) pp. 256-259.
  15. OSRAM Opto SemiconductorsRegensburgGermany (2009) http://catalog.osram-os.com/catalogue/catalogue.do?favOid=000000010000a33a02780023&act=showBookmark.
  16. "Editorial “Fringe projection: Whither we are”," Opt. and Las. in Eng. 48, 133-140 (2010).
  17. “Medizinproduktegesetz MPG (German Medical & Healthcare Products Regulatory Law),” (1995).
  18. WMDS Inc.ColumbiaMO (2008) http://www.animated-teeth.com/dental_crowns/t4_dental_crowns_steps.htm.
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2010 (1)

"Editorial “Fringe projection: Whither we are”," Opt. and Las. in Eng. 48, 133-140 (2010).

2009 (2)

J. Hintersehr, P. Kuehmstedt, "Intraorale 3D-Datenerfassung," Quintessenz Zahntech. 35, 446-451 (2009).

S. Riehemann, U. Lippmann, M. Palme, C. Grossmann, P. Kuehmstedt, G. Notni, "Microdisplay-based industrial 3-D and microstructure measurement systems," J. SID 17/7, 597-602 (2009).

2008 (1)

P. Kuehmstedt, J. Hintersehr, "Optische 3D-Messtechnik im Dentalbereich," Digital Dental News 2, 40-45 (2008).

Digital Dental News (1)

P. Kuehmstedt, J. Hintersehr, "Optische 3D-Messtechnik im Dentalbereich," Digital Dental News 2, 40-45 (2008).

J. SID (1)

S. Riehemann, U. Lippmann, M. Palme, C. Grossmann, P. Kuehmstedt, G. Notni, "Microdisplay-based industrial 3-D and microstructure measurement systems," J. SID 17/7, 597-602 (2009).

Opt. and Las. in Eng. (1)

"Editorial “Fringe projection: Whither we are”," Opt. and Las. in Eng. 48, 133-140 (2010).

Quintessenz Zahntech. (1)

J. Hintersehr, P. Kuehmstedt, "Intraorale 3D-Datenerfassung," Quintessenz Zahntech. 35, 446-451 (2009).

Other (16)

Holoeye Photonics AGBerlinGermany (2010) http://www.holoeye.com.

S. Riehemann, M. Palme, P. Kuehmstedt, G. Notni, "LCoS based projection systems for optical metrology," SID Symp. Dig. (2003) pp. 256-259.

OSRAM Opto SemiconductorsRegensburgGermany (2009) http://catalog.osram-os.com/catalogue/catalogue.do?favOid=000000010000a33a02780023&act=showBookmark.

“Medizinproduktegesetz MPG (German Medical & Healthcare Products Regulatory Law),” (1995).

WMDS Inc.ColumbiaMO (2008) http://www.animated-teeth.com/dental_crowns/t4_dental_crowns_steps.htm.

ZEMAX Development Corp.BellevueWA“ZEMAX EE, software for optical system design,” (2010) http://www.zemax.com/.

Wikipedia, http://en.wikipedia.org/wiki/Phase_correlation Accessed September 23, 2010.

W. Singer, M. Totzeck, H. Gross, Handbook of Optical Systems (Springer Verlag, 2005–2010).

G. H. Notni, P. Kuehmstedt, M. Heinze, G. Notni, "Simultaneous measurement of 3D shape and color of objects," Proc. SPIE (2002) pp. 74-82.

G. H. Notni, G. Notni, "Digital fringe projection in 3D shape measurement—An error analysis," Proc. SPIE (2003) pp. 372-380.

P. Kuehmstedt, C. Munkelt, M. Heinze, C. Braeuer-Burchardt, G. Notni, "3D shape measurement with phase correlation based fringe projection," Proc. SPIE (2007) pp. 66160B.

M. S. Brennesholtz, E. H. Stupp, Projection Displays (Wiley-SID Series, 2008).

G. Notni, W. Schreiber, M. Heinze, G. H. Notni, "Flexible auto calibrating full-body 3D measurement system using digital light projection," Proc. SPIE (1999) pp. 79-87.

G. Frankowski, M. Chen, T. Huth, "Real-time 3D shape measurement with digital stripe projection by texas instruments micromirror devices DMD ™," Proc. SPIE (2000) pp. 90-105.

P. Kuehmstedt, C. Braeuer-Burchardt, C. Munkelt, M. Heinze, M. Palme, I. Schmidt, J. Hintersehr, G. G. Notni, "Intraoral 3D scanner," Proc. SPIE (2007) pp. 67620E.

P. Kuehmstedt, G. Notni, J. Hintersehr, J. Gerber, "CAD-CAM-system for dental purpose – An industrial application," Proc. Fringe'01 (2001) pp. 667-672.

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