Sensor with alignment self compensation

Details Sensor with alignment self compensation Sensor with alignment self compensation

2006-07-04

2006-07-04

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

C250S559290, C250S559350, C356S400000, C356S632000, C073S159000

Reexamination Certificate

active

07071480

ABSTRACT:
A material web attribute detection system with the material web having a first side and a second side. The system includes a radiation source located proximate to the first side of the material web and emitting radiation toward the material web, and a radiation detection array located proximate to the second side of the material web and producing a plurality of signals based on the radiation detected from the radiation source. A processor is included which utilizes the plurality of signals to determine a lateral offset and a gap size of the radiation detection array relative to the radiation source. The processor can then compensate for the radiation detection array and radiation source relative misalignment using the plurality of signals, the lateral offset and the gap size.

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