Patent
1976-08-05
1978-10-03
Corbin, John K.
350162SF, G02B 2700
Patent
active
041180992
ABSTRACT:
A method of imaging a three-dimensional object with the aid of coding and decoding using coherent point codes, whereby the object is recorded in two steps, each with a plurality of radiation sources of different orientation on the same recording material.
Negatives of the two images are produced, after which the positive of one image is combined with the negative of the other image, the combined images being subsequently multiplied by means of point holograms formed with the aid of a reference wave and a multiplicity of light sources whose co-ordinates correspond to those of the point images of the two source arrays recorded by a pinhole camera, the two multiplied images being superposed in one plane, the coded images being decoded by changing their scale with the aid of two synchronously controlled zoom lenses whereby the coordinates of the point image function of an image of an object layer in the coded images are adapted to the points stored in the two point holograms.
REFERENCES:
patent: 4023037 (1977-05-01), Weiss et al.
Tipton et al., "Coded Aperture Imaging with On-Axis Fresnel Zone Plates", Optical Engineering, vol. 12, No. 5, Sep./Oct. 1973, pp. 166-168.
Weiss, "3-Dimensional X-Ray Information Retrieving...", 1974 Intern. Optical Computing Conference, Zurich, Switzerland, Apr. 1974, pp. 41-44.
Brown, "Multiplex Imaging with Multiple-Pinhole Cameras," Journal of Applied Physics, vol. 45, No. 4, Apr. 1974, pp. 1806-1811.
Kock et al., "Tomosynthesis:Holographic Methods...", 3rd Inter. Conf. on Medical Physics, Goteborg, Sweden, Jul./Aug. 1972.
Barrett et al., "Fresnel Zone Plate Imaging in Radiology...", Optical Engineering, vol. 12, No. 1, Jan./Feb. 1973, pp. 8-12.
Rogers et al., "Imaging... with Incoherent Holography", Optical Engineering, vol. 12, No. 1, Jan./Feb. 1973, pp. 13-22.
Wouters et al., "Direct Method of Decoding Multiple Images," Applied Optics, vol. 12, No. 8, Aug. 1973, pp. 1871-1873.
Klotz Erhard
Tiemens Ulf
Weiss Hermann
Cohen Simon L.
Corbin John K.
Lee John D.
Trifari Frank R.
U.S. Philips Corporation
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