Title :
Compact 3D profilometer with grazing incidence diffraction optics
Author_Institution :
Res. Dept., DeWitt Brothers Tool Co., Ancramdale, NY, USA
Abstract :
A new configuration of diffraction range finder is disclosed that places the grating at an angle of grazing incidence relative to the lens and transducer in the receiver. The new design offers improvements over an earlier prototype in reduced package size, shorter grating frequency chirp, and anamorphic behavior that increases length to depth ratios in profilometry applications. Demonstrations with transmission and reflection types of diffraction grating corroborate predictions
Keywords :
chirp modulation; diffraction gratings; distance measurement; holography; anamorphic behavior; compact 3D profilometer; depth ratios; diffraction grating; diffraction range finder; grating frequency; grazing incidence; incidence diffraction optics grazing; prototype; Chirp; Diffraction gratings; Frequency; Lenses; Optical diffraction; Optical receivers; Optical reflection; Packaging; Prototypes; Transducers;
Conference_Titel :
3-D Digital Imaging and Modeling, 2001. Proceedings. Third International Conference on
Conference_Location :
Quebec City, Que.
Print_ISBN :
0-7695-0984-3
DOI :
10.1109/IM.2001.924401
