发明授权
US5828056A Photoelectric detector with improved clear container feature detection
失效
光电探测器具有改进的透明容器特征检测
- 专利标题: Photoelectric detector with improved clear container feature detection
- 专利标题(中): 光电探测器具有改进的透明容器特征检测
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申请号: US742708申请日: 1996-11-01
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公开(公告)号: US5828056A公开(公告)日: 1998-10-27
- 发明人: Richard A. Alderman , Kenneth F. Barnes , Bo Su Chen
- 申请人: Richard A. Alderman , Kenneth F. Barnes , Bo Su Chen
- 申请人地址: MN Minneapolis
- 专利权人: Honeywell Inc.
- 当前专利权人: Honeywell Inc.
- 当前专利权人地址: MN Minneapolis
- 主分类号: G01V8/22
- IPC分类号: G01V8/22 ; G01N9/04
摘要:
A photodetector is provided with two light sources and a light sensitive component. The use of two light sources significantly reduces the opportunity of a surface feature, or abnormality, from focusing light back toward the light sensitive component in a manner that could possible cause the photodetector to misinterpret the intensified light as being indicative of the absence of an object in the detection zone. The light sources and light sensitive component can be arranged along an axis which is either parallel to the path of the objects to be detected or perpendicular to their path.
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