Abstract: A method of obtaining, in a single exposure, imaging information from an object (16) representative of more than two distinct illumination images, the method comprising the steps of generating first electromagnetic waves (14) at least some of which having spatially modulated polarisation; illuminating the object with the first electromagnetic waves; and capturing second electromagnetic waves (18) emanating from the object.

Abstract: The invention relates to a submarine antenna to be attached to the hull of a submarine, said antenna comprising a planar converter arrangement (15) which extends along the hull (11) when attached and which has a reflector (21) and a plurality of electroacoustic converter elements (20). Said converter elements are arranged next to and interspaced from each other and are arranged in front of the reflector (21) in the sound incidence direction. The aim of the invention is to optimize said lateral antenna for attachment to the submarine in terms of its weight and volume and signal-to-disturbance ratio.

Abstract: Embodiments of the invention allow the operation of confocal microscopes with relatively open pinholes (e.g. 1 Airy unit) whilst still giving a significant XY resolution improvement. In addition axial (Z) discrimination or resolution may also be improved. This is achieved by splitting the emitted light path in an interferometric fashion. One of the split beams is then directed inversion which inverts at least one coordinate in image space. The transformed beam and the non-transformed beam are then recombined in an interferometric fashion (i.e. coherently added), which provides an interference effect resulting in increased resolution of the image. Where the embodiments are being used in a confocal application, the resulting combined beam can then be subject to a spatially discriminating means, such as a pinhole, or the like.