Holographic three-dimensional display system and method based on multi-modulation device
A three-dimensional display and holographic technology, applied in three-dimensional systems, instruments, electrical components, etc., can solve the problem of small viewing angle of three-dimensional images, and achieve the effect of simple structure
Inactive Publication Date: 2013-03-13
SUN YAT SEN UNIV
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[0004] However, limited by the spatial resolution of the modulator, the viewing angle of the 3D image directly generated by the optical modulator through the diffraction of the optical system is relatively small.
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[0027] In order to solve the problems existing in the prior art, this patent takes a hologram generating unit based on Fourier Computational Holography as an example, and uses multiple modulation devices to illustrate the holographic three-dimensional display system and method based on multiple modulation devices proposed in this patent.
[0028] The holographic three-dimensional display system based on multi-modulation devices using Fourier transform holography technology, the optical path structure of a single image generation unit is as follows figure 1 Shown: the forward hologram generation unit 10 is composed of a spatial light modulator 11 and a transformation lens 12 ; the reverse hologram generation unit 20 is composed of the same spatial light modulator 21 and transformation lens 22 . The conversion lenses 12 and 22 share the same focal plane, and the optical axes coincide with a line inclined by an angle θ relative to the optical axis of the system. The half mirror 3...
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The invention relates to the technical field of three-dimensional image display, in particular to a holographic three-dimensional display system and method based on a multi-modulation device. A multi-space light modulator technology is adopted, a semi-reflection mirror is combined, and a full-viewing-angle holographic three-dimensional image display free of mechanical motion is achieved by overlaying synthesis of real images and virtual images of a to-be-displayed three-dimensional image with different viewing angle ranges. The system comprises a forward direction hologram generating unit, a reverse direction hologram generating unit, a semi-reflection mirror and a control unit. The multi-modulation device is adopted, full-viewing-angle holographic three-dimensional image display free of mechanical motion is achieved by combining viewing angle synthesis of the real images and the virtual images, the system has no special requirements for refresh frequency of a space light modulator, and the holographic three-dimensional display system simple in structure can be obtained.
Description
technical field [0001] The invention relates to the technical field of three-dimensional image display, in particular to a holographic three-dimensional display system and method based on a multi-modulation device. Background technique [0002] Since it is difficult to clearly and accurately express the depth information of the third dimension in two-dimensional display, people have been working on the display technology that can display stereoscopic scenes—three-dimensional image display technology. At present, the main three-dimensional technology is the stereoscopic three-dimensional image display technology, which provides the observer's binocular with plane images of different viewing angles, and the three-dimensional display effect is obtained by the synthesis of the human brain. Further, combined with the scanning technology, a full-view image display can be realized in the range of 360 degrees. However, its primitive image is a two-dimensional image. If you want to ...
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IPC IPC(8): G03H1/22G02B27/22H04N13/04
Inventor 滕东东王彪刘立林
Owner SUN YAT SEN UNIV