HYPERSPECTRAL CAMERA AND METHOD FOR ACQUIRING HYPERSPECTRAL DATA

摘要

Hyperspectral camera comprising light mixing chambers (3000) where the chambers are projected onto the imaging sensor (2100), the projection of each chamber being slightly larger than a sensor pixel. The chambers are placed as a linear array (3100) in the slit plane (2040) for a first embodiment or as a two dimensional matrix directly in front of the imaging sensor for a second embodiment. The mixed light from each chamber is depicted by several sensor pixels, the sensor outputting sensor information used to form an overdetermined equation set,, this set is solved and optimised for the solution giving the lowest overall error or the best fit. The solution of the equation set combined with the optimisation is the intensity values of the chambers (3000) constituting imaginary pixels being calculated. These imaginary pixels form the output of an improved hyperspectral camera system, which has significantly lower optical errors like keystone and point spread function variation for different wavelengths.