| dc.description.abstract | Conventional multiplex holograms are composed of 2D image information in a sequence of long, thin and fan-shape areas of the recording film. As the result, the reconstructed image will be over laid by many black stripes. It looks like viewing an image through a fence, called the ＂picket-fence effect＂. This problem can be amended by using the image-plane technique. In the previous study, cylindrical lenses are added in the object beam and the reference beam to compensate for the ＂astigmatic effect＂, when the hologram is curved into a conical or cylindrical surface.
In this study, we use the method of image-plane technique of cylindrical holographic stereogram, and we reshape the object information plane by ray-tracing without cylindrical lenses in both of the object and the reference beam. After we found the curved object information plane, we found the curvature approaching flat. Therefore, we replace the curved object plane with LCD and calculate the effect of the lens aperture on the broadening of the image point on the cylindrical surface. We simplify the step in the experiment by bending the film into a cylinder before holographic exposure, and the observer can perceive a 3D real image generated near the axis of the hologram cylinder without astigmatic effect. We use numerical calculation to simulate the holographic process and the reconstructed 3D images observed at different positions. | en_US |