Millimeter-wave imaging apparatus
AssigneeQinetiq Limited
InventorNeil Salmon
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Abstract
A millimetre wave imaging apparatus comprises a scanning mechanism, a reflector lens and a receiver array. The scanning mechanism comprises two wedge prisms which scan radiation incident upon them across the receiver array in an elliptical pattern. This optical configuration is such that the pupil plane, defined by the scanning mechanism, is located optically at the centre of curvature of the focusing surface, which reduces coma and astigmatism optical aberrations.
Claims18
A millimetre wave imaging apparatus comprising scanning means, focusing means and a plurality of receiver elements, the focusing means being physically interposed between the scanning means and the receiver elements, the scanning means comprising two rotatable prisms arranged to scan radiation from a field of view onto said focusing means such that focussed radiation from a region of the field of view is incident upon at least one of the plurality of receiver elements.
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Dependencies are inferred from the claim text.