Patent ID: 7990538

Claim:
A method for high-speed analysis of product samples during product processing, comprising: providing an illumination source; illuminating with a portion of the light from the illuminating source at least a portion of a product with light at an inspection point; providing first and second light sensitive detectors, the detectors producing output signals based on received light; directing a portion of the light from the illuminated product portion toward the first and second light sensitive detectors, the light from the illuminated product portion carrying information about the product portion; directing at least a portion of the light from the illumination source toward the first and second light sensitive detectors as a reference light; providing a temperature sensor in proximity to the first and second light sensitive detectors, the temperature sensor producing an output signal based on temperature; compensating the output signals produced by the first and second detectors based on the temperature output signal; and analyzing the compensated output signals produced by the first and second light sensitive detectors to determine temperature compensated illuminated product portion information.