| US 7,579,582 B2 | ||
| Scanning method and scanning apparatus | ||
| Thomas Kaltenbach, Gutach-Siegelau (Germany); and Klemens Wehrle, Winden (Germany) | ||
| Assigned to Sick AG, Waldkirch (Germany) | ||
| Filed on Apr. 24, 2007, as Appl. No. 11/789,466. | ||
| Claims priority of application No. 06008795 (EP), filed on Apr. 27, 2006. | ||
| Prior Publication US 2007/0252078 A1, Nov. 01, 2007 | ||
| Int. Cl. G06K 7/10 (2006.01) | ||
| U.S. Cl. 250—234 [235/462.06; 235/462.11; 235/462.42] | 25 Claims |
| 1. A scanning method for an optical scanning of at least a part surface of a body (10, 60), comprising:
providing at least two scanning units (26, 30, 36, 46, 50), each including a lighting unit and a light receiver unit, each of the scanning units having one scanning zone (28, 32, 38, 48, 52) defined by the lighting unit and the light receiver unit, wherein the scanning zones of at least two scanning units overlap
at least partly in an overlap zone (40);
illuminating the body with the lighting units of at least two of the scanning units;
receiving light transmitted from the lighting units onto the body and reflected by the body using light receiver units of
the at least two scanning units; and
reducing the scanning sensitivity of at least one of the scanning units 26, 30, 36, 46, 50) for the overlap zone (40), when the surface of the body (10) is in the overlap zone, in which the scanning zones of the at least two scanning units (26, 30, 36, 46, 50) overlap.
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