| 摘要 |
1,177,278. Holograms. BATTELLE DEVELOPMENT CORP. March 21, 1967 [March 30, 1966], No.13114/67. Heading G2C. A method of producing a three dimensional image comprises the steps of illuminating an object 21 with a first beam 19 of coherent light; positioning a photographic plate 25 to receive light 23 from the object; simultaneously directing a second beam of light 17, coherent with respect to the beam 19, on to the opposite side of the plate to that side receiving the light 23; developing the plate; and reconstructing an image of the object by illuminating the developed plate in reflection with white light. The image will be coloured depending on the colour of the beams 17, 19 and on the selective reflective/filtration characteristics of the developed plates. The colour of the image may be selected by controlling the shrinkage of the emulsion of the plate during development, or by adjusting the angle of incidence of the white light beam on the developed plate, or by adjusting the angles of incidence of the beams 17, 19 on the plate 25. The method may be modified to produce full colour three dimensional images by making the beams 17, 19 combinations of two coherent light beams of different colours. |
