Electronic testing apparatus and testing method thereof

Details Electronic testing apparatus and testing method thereof Electronic testing apparatus and testing method thereof

2008-03-11

2009-02-10

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

By monitoring of webs or thread

C356S947000

Reexamination Certificate

active

07489403

ABSTRACT:
An electronic testing apparatus is provided. The electronic testing apparatus includes a testing paper having a first reaction line and a second reaction line; a circuit board, having a light source, a first detector, a second detector equipped thereon, the light source being disposed between the first detector and the second detector; and a light shelter, defining a first chamber, a second chamber, and a third chamber, in which there is a first slit configured between the first chamber and the second chamber, and a second slit configured between the second chamber and the third chamber. The first chamber, the second chamber, and the third chamber respectively shelter the first detector, the light source, and the second detector. The first detector detects a reflected light of the light projected to the first window through the first slit by the light source, and the second detector detects a reflected light of the light projected to the second window through the second slit by the light source.

REFERENCES:
patent: 7214542 (2007-05-01), Hutchinson

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