Remote metrology by comparative digital holography
| Autor: | Werner Jüptner, Torsten Baumbach, Christoph von Kopylow, Wolfgang Osten |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Physics
Wavefront Spatial light modulator business.industry Image quality Materials Science (miscellaneous) ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Holography Holographic interferometry Industrial and Manufacturing Engineering law.invention Structured-light 3D scanner Interferometry Optics law Business and International Management business Digital holography |
| Zdroj: | Applied optics. 45(5) |
| ISSN: | 1559-128X |
| Popis: | A method for the remote comparison of objects with regard to their shape or response to a load is presented. The method allows interferometric sensitivity for comparing objects with different microstructure. In contrast to the well-known incoherent techniques based on inverse fringe projection this new approach uses the coherent optical wave field of the master object as a mask for the illumination of the sample object. The coherent mask is created by digital holography to allow instant access to the complete optical information of the master object at any place desired. The mask is reconstructed by a spatial light modulator (SLM). The optical reconstruction of digital holograms with SLM technology allows modification of reconstructed wavefronts with respect to improvement of image quality, the skilled introduction of additional information about the object (augmented reality), and the alignment of the master and test object. |
| Databáze: | OpenAIRE |
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