Title:
【発明の名称】構成要素および/または基板の位置識別および/または品質検査のための装置における照明設定方法
Document Type and Number:
Japanese Patent JP2001520392
Kind Code:
A
Abstract:
In a method and apparatus wherein components and/or markings applied to substrates are illuminated with illumination devices and imaged via a camera, adequate contrast between useful and unwanted structures is achieved even in the case of highly disparate optical properties of different materials for the substrates, components and markings by the use of an illumination device composed of a number of illumination units that respectively emit light in spectral ranges different from one another and which are thereby separately varied in intensity. This illumination with variable spectral distribution assures an adequate contrast even given the employment of different materials for the illuminated items.
Inventors:
Gerhard Haas
Application Number:
JP2000516517A
Publication Date:
October 30, 2001
Filing Date:
September 21, 1998
Export Citation:
Assignee:
Siemens Aktiengesellschaft
International Classes:
G06T1/00; H05K13/08; G01B11/00; (IPC1-7): G01B11/00; G06T1/00; H05K13/08
Attorney, Agent or Firm:
Toshio Yano (4 outside)