The Three-Dimensional Display Technique Of The Hologram

The development of three-dimensional (3D) display technique of hologram and the current state in this field in our country are introduced. For the need of the development of the modern display technique and strengthening three-dimensional effect of the picture display, the research of 3D display technique of hologram has been carried out.The work includes two parts.In the first part, a 3D true color hologram making with a new method of scattering reference light and liquid crystal display (LCD) is purposed. The color of the picture is separated by the computer image processing software and the LCD is used to display the separated tricolor information. In the experiment the LCD is used to record a hologram with the scattering reference light coming from three slits and a 3D true color moving hologram is obtained.In the second part, a new technique of 3D moving hologram by the multi-dot synthetic method is purposed. The parallax information of different perspective picture is encoded by the computer imaging processing software; the encoded information is recorded on one film by the record method of image holograph. A 3D moving hologram with one dimensional parallax or a 3D full-parallax can be obtained respectively.The experiments proves that in practice these two techniques are feasible and can realize the record with one-wavelength laser and the reconstruction with white light, the reconstructive images can show the 3D moving vision. Among these images the true color moving hologram shows that the color of the picture looks true and bright, 3D moving effect is very obvious. This technique can be applied in such versatile field as anti-counterfeiting, art and merchandise show and so on. The multi-dot synthetic 3D moving hologram can show not only 3D moving effect with horizontal parallax but also full parallax including vertical parallax; this makes 3D image fully shows object information. The technique not only can be applied in such field as anti-counterfeiting and large billboard, but also have reference value in product of 3D display screen. It's possible to produce this 3D display screen showing different image from multi-angle of view.