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METHOD AND DEVICE FOR REDUCING SPECKLE

机译:减少斑点的方法和装置

摘要

The invention relates to a method for reducing speckle patterns of a three-dimensional holographic reconstruction. According to said method, a controllable light modulator (1) into which a three-dimensional scene is coded is illuminated by coherent light, a reconstruction means (21, 22) projects the modulated light close to an eye position (PE) into a space of observation and a control means (7) controls the illumination. The aim of the invention is to provide a holographic reproduction device in which the speckle pattens occurring during reconstruction of a three-dimensional scene are reduced. Another aim is to provide a next-to-real time method using a carrier medium of conventional image refresh rate. For this purpose, the light controlled by the control means (7) is used to produce, starting from the three-dimensional scene encoded in the light modulator, different independent light distributions of complex-value wavefronts of the same three-dimensional scene in the eye position, said light distributions being incoherent with respect to each other. Reconstructions of the three-dimensional scene that correspond to the different complex-value wavefronts are produced in a reconstruction space in the same location and are incoherently superposed so that from the eye position a single speckle-reduced reconstruction of the three-dimensional scene (6) is seen.
机译:本发明涉及一种用于减少三维全息重建的斑点图案的方法。根据所述方法,通过相干光照射其中编码了三维场景的可控光调制器(1),重构装置(21、22)将调制后的光靠近眼睛位置(PE)投射到空间中观察和控制装置(7)控制照明。发明内容本发明的目的是提供一种全息再现设备,其中减少了在三维场景的重建期间出现的斑点图案。另一个目的是提供一种使用传统图像刷新率的载体介质的实时实时方法。为此,由控制装置(7)控制的光被用于从在光调制器中编码的三维场景开始,在该三维场景中产生相同三维场景的复数值波前的不同独立光分布。眼睛位置,所述光分布相对于彼此不相干。在相同位置的重建空间中生成与不同复数值波阵面相对应的三维场景的重建,并且它们不相干地叠加在一起,从而从眼睛位置对三维场景进行了单个斑点减少的重建(6 )被看到。

著录项

  • 公开/公告号WO2008074721A1

    专利类型

  • 公开/公告日2008-06-26

    原文格式PDF

  • 申请/专利权人 SEEREAL TECHNOLOGIES S.A.;LEISTER NORBERT;

    申请/专利号WO2007EP63862

  • 发明设计人 LEISTER NORBERT;

    申请日2007-12-13

  • 分类号G03H1/22;G03H1/32;

  • 国家 WO

  • 入库时间 2022-08-21 19:58:38

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