System for inspecting matt, flat and/or slightly curved surfaces

1. Field of the Invention A system for inspecting matt, flat and/or slightly curved surfaces in order to identify defects includes an illumination device which irradiates the surface to be inspected at flat angles and has the following features. The illumination device is formed from a plurality of...

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Main Author Willing, Achim
Format Patent
LanguageEnglish
Published 28.09.2004
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Abstract 1. Field of the Invention A system for inspecting matt, flat and/or slightly curved surfaces in order to identify defects includes an illumination device which irradiates the surface to be inspected at flat angles and has the following features. The illumination device is formed from a plurality of elongated luminous surfaces which are disposed substantially parallel to one another. The light distribution of the respective elongated luminous surfaces is tightly concentrated in planes which lie transversely with respect to the longitudinal direction of the respective surface, in such a way that a substantially sheet-type light distribution is produced which covers the surface portion to be inspected. The observer is located within or at least in the proximity of the angle predetermined by reflection of the light radiated by the at least one elongated luminous surface on the surface portion to be inspected.
AbstractList 1. Field of the Invention A system for inspecting matt, flat and/or slightly curved surfaces in order to identify defects includes an illumination device which irradiates the surface to be inspected at flat angles and has the following features. The illumination device is formed from a plurality of elongated luminous surfaces which are disposed substantially parallel to one another. The light distribution of the respective elongated luminous surfaces is tightly concentrated in planes which lie transversely with respect to the longitudinal direction of the respective surface, in such a way that a substantially sheet-type light distribution is produced which covers the surface portion to be inspected. The observer is located within or at least in the proximity of the angle predetermined by reflection of the light radiated by the at least one elongated luminous surface on the surface portion to be inspected.
Author Willing, Achim
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References Thiel et al. (5309329) 19940500
Raimondi (5570239) 19961000
Goebel (2625646) 19530100
Yazejian (5414518) 19950500
Tanaka et al. (5237404) 19930800
(40 12 372) 19911000
Willing (6278517) 20010800
(0 374 977) 19931100
(WO 9808078) 19980200
Gretener (2574031) 19511100
Cosnard et al. (5424835) 19950600
(0 374 977) 19900600
Stewart et al. (5627646) 19970500
Taltavull (3866036) 19750200
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Snippet 1. Field of the Invention A system for inspecting matt, flat and/or slightly curved surfaces in order to identify defects includes an illumination device which...
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