Imaging system using focal plane array
AssigneeGEC-Marconi Limited
InventorRobert K. McEwen
Life of this patent
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Abstract
An imager for the implementation of microscan comprises a member 18 for interrupting radiation between a lens and an array of imaging elements 13. The member 18 comprising alternate refractive transmissive regions 25 and non-transmissive regions 24. The transmissive regions 25 refracting radiation transmitted through them in the direction shown by the arrows. As the disc rotates across the array 13 the image focused on it moves giving successive frames which are shifted relative to one another.
Claims31
An imager comprising an array of sensing elements arranged in rows and columns, a lens adapted to focus an image on said array and a member which includes at least one refractive region transmissive to radiation to which the sensing elements are responsive, wherein the member is movable such that a refractive region of the member is repeatedly interposed in a radiation path between the lens and the array whereby the image focused on the array is displaced diagonally by said member, relative to said rows and columns of the array.
An imager comprising a lens, an array of sensing elements and a substantially planar member which is arranged to rotate about an axis, the member comprising a plurality of refractive regions, transmissive to radiation to which the sensing elements are responsive, and adjacent non-transmissive regions which upon rotation of the member intersect a radiation path between the lens and the sensor array, the dimensions of the member being such that the boundary between adjacent transmissive and non-transmissive regions passes over at least one column or at least one row, of the array with a substantially constant linear velocity.
Dependencies are inferred from the claim text.