Real-color hologram with wide viewing angle obtained by the combination of computer and optical method

被引:0
|
作者
Gan, Liangqin [1 ]
Wang, Hui [1 ]
Jin, Hongzhen [1 ]
Li, Yong [1 ]
机构
[1] Zhejiang Normal Univ, Inst Informat Opt, Jinhua 321004, Peoples R China
来源
HOLOGRAPHY AND DIFFRACTIVE OPTICS III | 2008年 / 6832卷
关键词
wide viewing angle; real color hologram; monochromatic holograms; mirror; computer-generated hologram;
D O I
10.1117/12.756701
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A new technique is proposed to obtain a real color hologram with a large viewing angle by the combination of computer and optical method. Two steps are followed to finish this technique. (1) Computer-generated hologram H, is yielded. According to the theory of light propagation, and taking full advantage of computer-generated hologram, object lightwave distribution of three monochromatic Fresnel holograms with a large dimension is computed in different area of the same plane. Object lightwave distribution is folded into smaller area based on the method of mirror images. High density holograms H-1r, H-1g, H-1b are generated after the holograms are exported and microfilmed. (2) A rainbow hologram H-2 is generated by optical ways. In the recording procedure, two parallel mirrors with appropriate parameters must be matched in. the experiment system. In terms of the reversibility of light path principle, an image with a wide viewing angle is reconstructed by reversing the reconstruction lightwave. The principle of the proposed method and the experimental result rove that the technique achieves a color reconstructed image with a wide viewing angle of 14 degrees. It is very clear that the stereoscopic effect of the reconstructed image is increased.
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页数:8
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