Patent ID: 8213006
Filing Date: 2012-07-03
Classification: G01J,G01N

Abstract:
1. A method for high-speed analysis of product samples, comprising: illuminating at least a portion of a sample with light at an inspection point; providing a plurality of light sensitive detectors, the detectors producing outputs based on received light, wherein the detectors are coupled to receive light from the same sample portion and to receive a reference light; directing light from the sample portion toward a selected one of the plurality of light sensitive detectors through at least one multivariate optical element, the light from the sample portion carrying information about the sample portion; directing at least a portion of the sample illuminating light toward one of the plurality of light sensitive detectors through a reference optical element to form a reference light, the reference light carrying information about the sample illuminating light; detecting the reference light in the one of the plurality of light sensitive detectors separately from the light from the sample portion; and analyzing the signals produced by the detectors, the analysis being based on a comparison of the signals produced from light passing through the at least one multivariate optical element and the signal produced from the reference light.