Details
| Original language | English |
|---|---|
| Title of host publication | Optical Measurement Systems for Industrial Inspection VIII |
| Number of pages | 7 |
| Publication status | Published - 13 May 2013 |
| Event | Optical Measurement Systems for Industrial Inspection VIII - Munich, Germany Duration: 13 May 2013 → 16 May 2013 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 8788 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
The paper introduces a new fibrescopic micro fringe projector, showing the special requirements of micro fringe projection in combination with coupling to flexible image fibre bundles. So far performed example applications, such as measurements of deep drawing tools, will be shown and difficulties of certain geometries, such as internal gearing elements with steep flank gradients are discussed. Due to the miniaturization of the fringe pattern into a 2 mm diameter fibre bundle and the decrease of resolution in the bundle, a decrease of contrast has to be accepted. That leads to a fading of the sharp edges of black/white crossovers to sine like characteristics on the detection camera. Methods for the compensation of these artifacts in the beforehand made calibration and during the acquisition of the measurement data will be presented. Fitted applications of the conventional grey code technique will be as well introduced and compared as the developing method of encoded phase shift. In the current state the newly designed fringe projector is connected to a high resolution coordinate measurement machine (CMM). Measurement data and achievable resolutions of the connected systems will as well be presented, giving information about realizable measuring volumes.
Keywords
- Endoscopy, Fiber optical image bundle, Fringe projection, GRIN-Optics, Measuring Endoscopy
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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- Apa
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- BibTeX
- RIS
Optical Measurement Systems for Industrial Inspection VIII. 2013. 878817 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8788).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - High resolution measurements of filigree, inner geometries with endoscopic micro fringe projection
AU - Ohrt, Christoph
AU - Kästner, Markus
AU - Reithmeier, Eduard
PY - 2013/5/13
Y1 - 2013/5/13
N2 - The paper introduces a new fibrescopic micro fringe projector, showing the special requirements of micro fringe projection in combination with coupling to flexible image fibre bundles. So far performed example applications, such as measurements of deep drawing tools, will be shown and difficulties of certain geometries, such as internal gearing elements with steep flank gradients are discussed. Due to the miniaturization of the fringe pattern into a 2 mm diameter fibre bundle and the decrease of resolution in the bundle, a decrease of contrast has to be accepted. That leads to a fading of the sharp edges of black/white crossovers to sine like characteristics on the detection camera. Methods for the compensation of these artifacts in the beforehand made calibration and during the acquisition of the measurement data will be presented. Fitted applications of the conventional grey code technique will be as well introduced and compared as the developing method of encoded phase shift. In the current state the newly designed fringe projector is connected to a high resolution coordinate measurement machine (CMM). Measurement data and achievable resolutions of the connected systems will as well be presented, giving information about realizable measuring volumes.
AB - The paper introduces a new fibrescopic micro fringe projector, showing the special requirements of micro fringe projection in combination with coupling to flexible image fibre bundles. So far performed example applications, such as measurements of deep drawing tools, will be shown and difficulties of certain geometries, such as internal gearing elements with steep flank gradients are discussed. Due to the miniaturization of the fringe pattern into a 2 mm diameter fibre bundle and the decrease of resolution in the bundle, a decrease of contrast has to be accepted. That leads to a fading of the sharp edges of black/white crossovers to sine like characteristics on the detection camera. Methods for the compensation of these artifacts in the beforehand made calibration and during the acquisition of the measurement data will be presented. Fitted applications of the conventional grey code technique will be as well introduced and compared as the developing method of encoded phase shift. In the current state the newly designed fringe projector is connected to a high resolution coordinate measurement machine (CMM). Measurement data and achievable resolutions of the connected systems will as well be presented, giving information about realizable measuring volumes.
KW - Endoscopy
KW - Fiber optical image bundle
KW - Fringe projection
KW - GRIN-Optics
KW - Measuring Endoscopy
UR - http://www.scopus.com/inward/record.url?scp=84880758359&partnerID=8YFLogxK
U2 - 10.1117/12.2020440
DO - 10.1117/12.2020440
M3 - Conference contribution
AN - SCOPUS:84880758359
SN - 9780819496041
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical Measurement Systems for Industrial Inspection VIII
T2 - Optical Measurement Systems for Industrial Inspection VIII
Y2 - 13 May 2013 through 16 May 2013
ER -