Patent ID: 8785857
Filing Date: 2014-07-22
Classification: G01N

Abstract:
1. A closed path infrared sensor, comprising: an enclosure, a first energy source within the enclosure, at least a second energy source with the enclosure, at least one detector system within the enclosure, and a mirror system external to the enclosure and spaced from the enclosure, the mirror system reflecting energy from the first energy source to the at least one detector system via a first analytical path and reflecting energy from the second energy source to the at least one detector system via a second analytical path, each of the first analytical path and the second analytical path being less than two feet in length, a length of the first analytical path within the enclosure being less than 10% of a total length of the first analytical path, and a length of the second analytical path within the enclosure being less than 10% of a total length of the second analytical path.