abstract |
A device for discriminately illuminating a sample ( 22 ) to be viewed with excitation light ( 70 ). For example, an image taken with a CCD ( 10 ) provides feedback which is used to modulate the output of an excitation light source ( 40 ), thereby allowing a sample ( 22 ) to be viewed within the optimal range of detection for the particular CCD device ( 10 ) being used, despite the potential of wide dynamic ranges of sample luminescence. |