Patent ID: 6259414
Filing Date: 2001-07-10
Classification: G01S,G01V,G02B,H01Q

Abstract:
An apparatus for scanning radiation from a scene and for generating output radiation for input toa receiver system comprising;a first rotatable reflective plate, for receiving and reflecting radiation, having an axis of rotation passing substantially through the centre of the plate, wherein the axis of rotation is inclined at a non-zero angle .theta.a to the normal to the reflective plate,rotary means for rotating the reflective plate,secondary reflection means for receiving and reflecting radiation andstatic reflection means for receiving radiation reflected from the first rotatable reflective plate and reflecting radiation towards the secondary reflection means,characterised in that the secondary reflection means is a second rotatable reflective plate having a common axis of rotation with the first rotatable reflective plate, wherein the common axis of rotation is inclined at a non-zero angle .theta.b to the normal to the second reflective plate.