Patent ID: 7414723
Filing Date: 2008-08-19
Classification: G01J

Abstract:
1. A calibration standard assembly for an imaging spectrometric instrument that includes an imaging sensor based on a two-dimensional array of detector elements, comprising: a first calibration standard having a first set of optical properties, a first actuator portion operatively connected to the first calibration standard and operative to move the first calibration standard in and out of a field of view of the imaging spectrometric instrument, sequencing means including means for performing steps of each automatically acquiring an image using the image sensor, automatically moving the first calibration standard using the first actuator portion, and automatically acquiring calibration data from the first calibration standard using the image sensor for a first wavelength, wherein the sequencing means also includes means for repeating the steps of automatically acquiring an image using the image sensor, automatically moving the first calibration standard using the first actuator portion, and automatically acquiring calibration data from the first calibration standard using the image sensor for each of a plurality of further wavelengths in a range of instrument wavelengths to acquire a sequence including a plurality of images and a plurality of corresponding calibration data sets for detector elements in the two-dimensional array, and means for correcting data for each of the images based on the calibration data acquired for the wavelength used to acquire that image to generate a calibrated hyperspectral sample image data set that includes corrected data for the images at the different wavelengths.