System and method for measuring the permeability of a material

Details System and method for measuring the permeability of a material System and method for measuring the permeability of a material

2007-05-29

2007-05-29

Pham, Hoa (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

C356S238200

Reexamination Certificate

active

10854338

ABSTRACT:
A system for measuring the permeability of a material includes a light source for illuminating the material, and a stray light sensor for detecting stray light traveling through the material from the light source and outputting a stray light signal indicative of the stray light detected. The system further includes a direct light sensor for detecting direct light traveling through holes in the material from the light source and outputting a direct light signal indicative of the direct light detected. Finally, the system includes a digital processing device for receiving the stray light and direct light signals and calculating the permeability of the material.

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