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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hasman, E. Kleiner, V. Davidson, N. Friesem, A.A. |
| Copyright Year | 2000 |
| Description | Author affiliation: Fac. of Mech. Eng., Technion-Israel Inst. of Technol., Haifa, Israel (Hasman, E.) |
| Abstract | Summary form only. Light stripe triangulation configuration based on a color-coded arrangement allows parallel, fast, real-time 3-D surface profilometry with an extended depth-measuring range and high axial and lateral resolution. The method exploits polychromatic illumination and a cylindrical element that disperses the incident light along the axis, leading to an increased depth-measuring range without any decrease in the axial or the lateral resolution. In our recent experiments the cylindrical element was a combined diffractive-refractive optical element in which many light stripes, each of a different wavelength, are simultaneously focused at different focal lengths, forming a rainbow light sheet. The discrimination of each color stripe was further improved by a color decoding technique, in which a spectral filter simultaneously matched the entire wavelength distribution of the light sheet during detection. A 20-fold increase in the depth of focus was experimentally obtained, while diffraction-limited light stripes with extremely small sidelobes were completely maintained. |
| File Size | 76057 |
| File Format | |
| ISBN | 0780363191 |
| DOI | 10.1109/CLEOE.2000.910194 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-09-10 |
| Publisher Place | France |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Optical filters Optical surface waves Lighting Lead Optical diffraction Decoding Matched filters |
| Content Type | Text |
| Resource Type | Article |
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