SPECKLE REDUCTION IN HOLOGRAPHIC PROJECTION USING TEMPORAL-MULTIPLEXING OF SPATIAL FREQUENCIES

被引：0

作者：

Agour, Mostafa ^{[1
]}

Falldorf, Claas ^{[1
]}

von Kopylow, Christoph ^{[1
]}

Bergmann, Ralf B. ^{[1
]}

机构：

[1] Bremer Inst Angew Strahltech, D-28359 Bremen, Germany

来源：

2013 3DTV-CONFERENCE: THE TRUE VISION-CAPTURE, TRANSMISSION AND DISPALY OF 3D VIDEO (3DTV-CON) | 2013年

关键词：

Holography; 3D displays; Holographic displays; Spatial Light Modulators;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a method that significantly reduces the speckle effect in holographic projection. It is based on zero-padding the predefined projected intensity and calculating an extended phase distribution using an optimized iterative approach based on the generalized projection method. The extended phase distribution is divided into several finite ones with the size of the spatial light modulator (SLM). The SLM manipulates an incident plane wave to generate the projected intensity at a remote plane. Utilizing the temporal-multiplexing property of a phase-only SLM and incoherent superposition of the redundant intensities projected across the observation plane reduce the speckle effect. In contrast to the state of the art, no mechanical moving parts and no additional information are required during the projection process. The basic principle of this technique and its experimental verification are described.

引用

页数：4

共 13 条

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