scholarly journals Analytic computation of line-drawn objects in computer generated holography

2020 ◽  
Vol 28 (21) ◽  
pp. 31226
Author(s):  
David Blinder ◽  
Takashi Nishitsuji ◽  
Takashi Kakue ◽  
Tomoyoshi Shimobaba ◽  
Tomoyoshi Ito ◽  
...  
Keyword(s):  
Computer Generated Holography ◽  
Analytic Computation

scholarly journals Metalens Eyepiece for 3D Holographic Near-Eye Display

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1920
Author(s):  
Chang Wang ◽  
Zeqing Yu ◽  
Qiangbo Zhang ◽  
Yan Sun ◽  
Chenning Tao ◽  
...  
Keyword(s):  
Light Field ◽  
Three Dimensional ◽  
Fresnel Diffraction ◽  
Virtual Image ◽  
Display Devices ◽  
Computer Generated Holography ◽  
Wavefront Shaping ◽  
3D Scene ◽  
Optimum Solution ◽  
532 Nm

Near-eye display (NED) systems for virtual reality (VR) and augmented reality (AR) have been rapidly developing; however, the widespread use of VR/AR devices is hindered by the bulky refractive and diffractive elements in the complicated optical system as well as the visual discomfort caused by excessive binocular parallax and accommodation-convergence conflict. To address these problems, an NED system combining a 5 mm diameter metalens eyepiece and a three-dimensional (3D), computer-generated holography (CGH) based on Fresnel diffraction is proposed in this paper. Metalenses have been extensively studied for their extraordinary capabilities at wavefront shaping at a subwavelength scale, their ultrathin compactness, and their significant advantages over conventional lenses. Thus, the introduction of the metalens eyepiece is likely to reduce the issue of bulkiness in NED systems. Furthermore, CGH has typically been regarded as the optimum solution for 3D displays to overcome limitations of binocular systems, since it can restore the whole light field of the target 3D scene. Experiments are carried out for this design, where a 5 mm diameter metalens eyepiece composed of silicon nitride anisotropic nanofins is fabricated with diffraction efficiency and field of view for a 532 nm incidence of 15.7% and 31°, respectively. Furthermore, a novel partitioned Fresnel diffraction and resample method is applied to simulate the wave propagations needed to produce the hologram, with the metalens capable of transforming the reconstructed 3D image into a virtual image for the NED. Our work combining metalens and CGH may pave the way for portable optical display devices in the future.

scholarly journals The Dispositif of Holography

Arts ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 28 ◽  
Author(s):  
Jacques Desbiens
Keyword(s):  
Visual Art ◽  
Spatial Representation ◽  
Computer Generated Holography ◽  
French Word ◽  
History Of ◽  
Artistic Research

The French word dispositif, applied to visual art, encompasses several components of an artwork, such as the apparatus itself as well as its display conditions and the viewers themselves. In this article, I examine the concept of dispositif in the context of holography and, in particular, synthetic holography (computer-generated holography). This analysis concentrates on the holographic space and its effects on time and colors. A few comparisons with the history of spatial representation allow us to state that the holographic dispositif breaks with the perspective tradition and opens a new field of artistic research and experimentation.

Fast computation of computer-generated holography using novel look-up table

2007 ◽  
Author(s):  
Seung-Cheol Kim ◽  
Jung-Hoon Yoon ◽  
Sang-Hyun Lee ◽  
Eun Soo Kim
Keyword(s):  
Fast Computation ◽  
Computer Generated Holography ◽  
Look Up Table

Ultrastable absolute-phase common-path optical profiler based on computer-generated holography

1998 ◽  
Vol 37 (28) ◽  
pp. 6716 ◽  
Author(s):  
Nicolas B. E. Sawyer ◽  
Chung Wah See ◽  
Matthew Clark ◽  
Michael G. Somekh ◽  
Jason Y. L. Goh
Keyword(s):  
Common Path ◽  
Computer Generated Holography ◽  
Absolute Phase

Raspberry PI Cluster System for Computer Generated Holography

2021 ◽  
Author(s):  
Guangyu Zhang ◽  
Youchao Wang ◽  
Daoming Dong ◽  
Timothy Wilkinson
Keyword(s):  
Cluster System ◽  
Raspberry Pi ◽  
Computer Generated Holography
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