Infrared screening and inspection system
First Claim
1. An infrared inspection and detection system comprising:
- (a) isothermal enclosure means, said isothermal enclosure means including;
(i) outer housing means;
(ii) inner housing means located in and spaced apart from said outer housing means, said inner housing means defining an isothermal chamber for receiving a sample to be inspected; and
(iii) air conditioning means for removing heat from between said outer and inner housing means;
(b) support means in said isothermal chamber for supporting a sample for inspection;
(c) infrared camera means in said isothermal chamber for monitoring infrared emissions from the sample and deriving a signal indicative of the temperature of all areas of the sample;
(d) sensor means in said isothermal chamber for monitoring the temperature of said sample and ambient temperature conditions in said isothermal chamber, and deriving signals indicative of such temperatures; and
(e) computer means connected to said camera means and to said sensor means for examining all signals to produce a three dimensional image of the sample, variations in the image from sample to sample being indicative of an anomaly in a sample.
3 Assignments
0 Petitions
Accused Products
Abstract
In general, the spatial resolution and repeatability of results using infrared detectors for examining printed circuit cards has been so poor that the devices have failed to achieve commercial success. These problems are overcome by a system including an isothermal enclosure for receiving a card to be tested, an infrared camera in the chamber defined by the enclosure, sensors for monitoring the temperature of the card and ambient temperature conditions in the chamber to derive signals indicative of the temperatures, and a computer connected to the camera and to the sensors for examining all signals to produce a three dimensional image of the sample, variations in the image from sample to sample being indicative of an anomaly in a sample.
67 Citations
7 Claims
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1. An infrared inspection and detection system comprising:
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(a) isothermal enclosure means, said isothermal enclosure means including; (i) outer housing means; (ii) inner housing means located in and spaced apart from said outer housing means, said inner housing means defining an isothermal chamber for receiving a sample to be inspected; and (iii) air conditioning means for removing heat from between said outer and inner housing means; (b) support means in said isothermal chamber for supporting a sample for inspection; (c) infrared camera means in said isothermal chamber for monitoring infrared emissions from the sample and deriving a signal indicative of the temperature of all areas of the sample; (d) sensor means in said isothermal chamber for monitoring the temperature of said sample and ambient temperature conditions in said isothermal chamber, and deriving signals indicative of such temperatures; and (e) computer means connected to said camera means and to said sensor means for examining all signals to produce a three dimensional image of the sample, variations in the image from sample to sample being indicative of an anomaly in a sample. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification