Method and device for controlled illumination of a

专利名称：Method and device for controlled

illumination of an object for improvingidentification of an object feature in animage of the object

发明人：Gerhard Haas申请号：US09/069283申请日：19980429公开号：US06040895A公开日：20000321

摘要：In a method and apparatus wherein components and/or markings applied tosubstrates are illuminated with illumination devices and imaged via a camera, adequatecontrast between useful and unwanted structures is achieved even in the case of highlydisparate optical properties of different materials for the substrates, components andmarkings by the use of an illumination device composed of a number of illumination unitsthat respectively emit light in spectral ranges different from one another and which arethereby separately varied in intensity. This illumination with variable spectral distributionassures an adequate contrast even given the employment of different materials for theilluminated items.

申请人：SIEMENS AKTIENGESELLSCHAFT

代理机构：Hill & Simpson

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