Abstract: A holographic adaptive optic system for correcting the wavefront of a light. A phase correction device with a plurality of pixels in the path of the light. A holographic wavefront sensor in the path providing a pair of reconstruction beams for each phase correction device pixel. The relative intensity of the two beams being proportional to the amount of aberration present in the initial beam. A detector that measures the relative intensity of the pair of reconstructed beams. The detector connected by at least one individual control connector to the relevant pixel in the phase correction device. The individual control connectors controlling the phase correction device based upon the relative intensity between the two reconstruction beams to reduce the wavefront aberration.

Abstract: The invention provides a holographic image corrector in a microscope, which employs an optical system that has as an objective a lens or mirror. The characteristics of the objective are recorded by sending a first laser beam through a spatial filter (or an array of pinholes) and then through the objective, if a lens or reflecting the beam therefrom, if a mirror, to form an objective beam. Means are provided for directing a laser reference beam also through a spatial filter (or an array of pinholes) and intersecting same with the object beam in a recording medium, to form a hologram thereof. Then means illuminate the article to be viewed with a laser beam so that light therefrom passes through the objective or reflects therefrom and through the hologram, to correct for aberrations in the objective and provide a relatively clear image of the article.

Abstract: A holographic wavefront sensor inclusive of a multiplexed hologram that can reconstruct one or more diffracted beams from a single object or input beam onto a distant image plane. The position of the reconstructed beams on the distant image plane indicates the relative amounts of different aberrations present in the input beam. Optical and computer realization of the employed hologram are accomplished along with sensor configurations in simple and more complex uses.

Abstract: The present invention employs a method for transmitting and/or receiving high data bandwidths at reduced cost by employing a holographically corrected telescope for transmitting or receiving data-carrying signals remotely, at IR, optical or UV frequencies for low cost data communication.