Raytheon Company

William E Nothe

Joseph R Adamski

J Scott Petty

Christopher Ferguson

William E Prifti

Method and apparatus for determining moisture content of materials by irradiating a sample of unknown moisture content with a narrow frequency band of light at a first wavelength during a first time period and a narrow frequency band of light of a second wavelength during a second time period. The two wavelengths of light have different water absorptive characteristics, and therefore are reflected by varying degrees depending on the surface moisture on the material. The respective reflections are measured by a single common detector, and a value corresponding to the ambient light is subtracted from each measurement. A ratio of the resultant values is then correlated with data derived from precalibration measurements of samples of known moisture content.

Method and apparatus for determining moisture content of materials

A laser soldering system wherein a plurality of laser beams are simultaneously directed to a plurality of spatially separate locations on a printed circuit board for simultaneously soldering. Each of the laser beams is formed by combining the outputs of a plurality of fiber cables, each of which is connected to an individual laser diode.

Growing community of inventors

Billerica, MA, United States of America

William E Nothe