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US 6,552,788 B1Granted
Hyperspectral imaging using linear chromatic aberration
AssigneeRuda & Associates
InventorKenneth R. Castle
Life of this patent
Estimating the term…
Abstract
An image acquisition system employs a spectral imaging system whose focusing optics provide a linear dispersion of color along a tilted focal plane which intercepts each spectral component at the correct focal distance for that color.
Claims4
An image acquisition system having an imaging spectrometer exhibiting axial chromatic aberration causing each color to focus at a different focal distance the improvement comprising:
- an arrangement for compensating for said chromatic aberration by linearly dispersing each said aberrant color so that the chief rays for each said color produce the same image height;
- and
- a focal surface shaped to intercept each such dispersed color at a respective focal distance.
Dependencies are inferred from the claim text.