Highly improved range sensing – by reduction of spatial coherence
Optical range sensors based on triangulation are widely used for the shape measurement of optically rough objects. The origin of the achievable measuring uncertainty of the distance is speckle noise. Speckle noise is unavoidable in spatially coherent systems. We demonstrate two experiments which pro...
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| Veröffentlicht in: | Optik (Stuttgart) 2001, Vol.112 (7), p.299-303 |
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| container_title | Optik (Stuttgart) |
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| creator | Spellenberg, B. Herrmann, J.M. Häusler, G. |
| description | Optical range sensors based on triangulation are widely used for the shape measurement of optically rough objects. The origin of the achievable measuring uncertainty of the distance is speckle noise. Speckle noise is unavoidable in spatially coherent systems. We demonstrate two experiments which prove that without spatial coherence, the measuring uncertainty can be dramatically reduced, and we present an on-line 3D-sensor for laser-material processing, exploiting this knowledge. |
| doi_str_mv | 10.1078/0030-4026-00058 |
| format | Article |
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The origin of the achievable measuring uncertainty of the distance is speckle noise. Speckle noise is unavoidable in spatially coherent systems. 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The origin of the achievable measuring uncertainty of the distance is speckle noise. Speckle noise is unavoidable in spatially coherent systems. We demonstrate two experiments which prove that without spatial coherence, the measuring uncertainty can be dramatically reduced, and we present an on-line 3D-sensor for laser-material processing, exploiting this knowledge.</description><subject>Biological and medical applications</subject><subject>coherent noise</subject><subject>distance measurement</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Industrial applications</subject><subject>laser material processing</subject><subject>Optical elements, devices, and systems</subject><subject>Optical metrology</subject><subject>Optics</subject><subject>Physics</subject><subject>Range finders, remote sensing devices, laser doppler velocimeters, sar, and lidar</subject><subject>triangulation</subject><issn>0030-4026</issn><issn>1618-1336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNp1kD9PwzAQxS0EEqUws3pgDT3HseOMqAKKhMQCs-U_l9YoTSI7VOrGd-Ab8klIKEIsTDfce-_u9wi5ZHDNoFQLAA5ZAbnMAECoIzJjkqmMcS6Pyex3e0rOUnodJWUJ5YwsV2G9afY0bPvY7dDTaNo10oRtCu2afr5_ULunEf2bG0LX0q6mqTdDMA113QYjtg7PyUltmoQXP3NOXu5un5er7PHp_mF585g5ztSQyaICVhnBcikkKiFFrQCkdZIL5IXlpvAWqrzKlcHSWyVraQVKVlgPRiKfk8Uh18UupYi17mPYmrjXDPTUgZ4o9USpvzsYHVcHR2-SM009wrmQ_tgUK-Ukqw4yHL_fBYw6uTCR-RDRDdp34d8TXxU4bZw</recordid><startdate>2001</startdate><enddate>2001</enddate><creator>Spellenberg, B.</creator><creator>Herrmann, J.M.</creator><creator>Häusler, G.</creator><general>Elsevier GmbH</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2001</creationdate><title>Highly improved range sensing – by reduction of spatial coherence</title><author>Spellenberg, B. ; Herrmann, J.M. ; Häusler, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c318t-649019a512656e8565f8006bc635e34b3a4db092928ae7db86f6b5e614bd0a6e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Biological and medical applications</topic><topic>coherent noise</topic><topic>distance measurement</topic><topic>Exact sciences and technology</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Industrial applications</topic><topic>laser material processing</topic><topic>Optical elements, devices, and systems</topic><topic>Optical metrology</topic><topic>Optics</topic><topic>Physics</topic><topic>Range finders, remote sensing devices, laser doppler velocimeters, sar, and lidar</topic><topic>triangulation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Spellenberg, B.</creatorcontrib><creatorcontrib>Herrmann, J.M.</creatorcontrib><creatorcontrib>Häusler, G.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Optik (Stuttgart)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Spellenberg, B.</au><au>Herrmann, J.M.</au><au>Häusler, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Highly improved range sensing – by reduction of spatial coherence</atitle><jtitle>Optik (Stuttgart)</jtitle><date>2001</date><risdate>2001</risdate><volume>112</volume><issue>7</issue><spage>299</spage><epage>303</epage><pages>299-303</pages><issn>0030-4026</issn><eissn>1618-1336</eissn><coden>OTIKAJ</coden><abstract>Optical range sensors based on triangulation are widely used for the shape measurement of optically rough objects. The origin of the achievable measuring uncertainty of the distance is speckle noise. Speckle noise is unavoidable in spatially coherent systems. We demonstrate two experiments which prove that without spatial coherence, the measuring uncertainty can be dramatically reduced, and we present an on-line 3D-sensor for laser-material processing, exploiting this knowledge.</abstract><cop>Jena</cop><pub>Elsevier GmbH</pub><doi>10.1078/0030-4026-00058</doi><tpages>5</tpages></addata></record> |
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| ispartof | Optik (Stuttgart), 2001, Vol.112 (7), p.299-303 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Biological and medical applications coherent noise distance measurement Exact sciences and technology Fundamental areas of phenomenology (including applications) Industrial applications laser material processing Optical elements, devices, and systems Optical metrology Optics Physics Range finders, remote sensing devices, laser doppler velocimeters, sar, and lidar triangulation |
| title | Highly improved range sensing – by reduction of spatial coherence |
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