发明名称 |
OMNIDIREKTIONALEN BELEUCHTUNG IN EINER SCANNINGEINRICHTUNG |
摘要 |
Systems and methods are provided for selectively controlling the illumination, and particularly dark field illumination, applied to a symbol to be decoded, and for determining a suitable or optimized level of lighting for decoding the symbol. A method includes providing a light source comprising a plurality of individually-controllable lighting elements for providing low angle dark field illumination; activating an image sensor for detecting image data reflected from an encoded data symbol when the encoded data symbol is illuminated by the light source; and providing a controller connected to each of the individually-controllable lighting elements, the controller being programmed for: selectively activating the individually-controllable lighting elements to vary the direction of the low angle dark field illumination provided by the light source; and processing the image data detected by the image. |
申请公布号 |
DE602004011979(T2) |
申请公布日期 |
2009.02.12 |
申请号 |
DE20046011979T |
申请日期 |
2004.10.21 |
申请人 |
COGNEX TECHNOLOGY AND INVESTMENT CORP. |
发明人 |
GERST, CARL W. III;EQUITZ, WILLIAM H.;TESTA, JUSTIN;NADABAR, SATEESH |
分类号 |
G06K7/10;G06K7/14 |
主分类号 |
G06K7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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