scholarly journals Space bandwidth product enhancement of holographic display using high-order diffraction guided by holographic optical element

2015 ◽  
Vol 23 (26) ◽  
pp. 33170 ◽  
Author(s):  
Gang Li ◽  
Jinsoo Jeong ◽  
Dukho Lee ◽  
Jiwoon Yeom ◽  
Changwon Jang ◽  
...  
Keyword(s):  
Optical Element ◽  
High Order ◽  
Holographic Display ◽  
Order Diffraction ◽  
Holographic Optical Element

Holographic display for see-through augmented reality using mirror-lens holographic optical element

2016 ◽  
Vol 41 (11) ◽  
pp. 2486 ◽  
Author(s):  
Gang Li ◽  
Dukho Lee ◽  
Youngmo Jeong ◽  
Jaebum Cho ◽  
Byoungho Lee
Keyword(s):  
Augmented Reality ◽  
Optical Element ◽  
Holographic Display ◽  
Holographic Optical Element

scholarly journals Reconstruction of a three-dimensional color-video of a point-cloud object using the projection-type holographic display with a holographic optical element

2020 ◽  
Vol 28 (4) ◽  
pp. 5692 ◽  
Author(s):  
Hiroshi Amano ◽  
Yasuyuki Ichihashi ◽  
Takashi Kakue ◽  
Koki Wakunami ◽  
Hiroshi Hashimoto ◽  
...  
Keyword(s):  
Point Cloud ◽  
Three Dimensional ◽  
Optical Element ◽  
Holographic Display ◽  
Holographic Optical Element ◽  
Color Video

scholarly journals Holographic Display System to Suppress Speckle Noise Based on Beam Shaping

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 204
Author(s):  
Di Wang ◽  
Yi-Wei Zheng ◽  
Nan-Nan Li ◽  
Qiong-Hua Wang
Keyword(s):  
Optical Element ◽  
Speckle Noise ◽  
Beam Shaping ◽  
Diffractive Optical Element ◽  
The Other ◽  
Spatial Light Modulators ◽  
Viewing Angle ◽  
Display System ◽  
Holographic Display ◽  
Light Modulators

In this paper, a holographic system to suppress the speckle noise is proposed. Two spatial light modulators (SLMs) are used in the system, one of which is used for beam shaping, and the other is used for reproducing the image. By calculating the effective viewing angle of the reconstructed image, the effective hologram and the effective region of the SLM are calculated accordingly. Then, the size of the diffractive optical element (DOE) is calculated accordingly. The dynamic DOEs and effective hologram are loaded on the effective regions of the two SLMs, respectively, while the wasted areas of the two SLMs are performed with zero-padded operations. When the laser passes through the first SLM, the light can be modulated by the effective DOEs. When the modulated beam illuminates the second SLM which is loaded with the effective hologram, the image is reconstructed with better quality and lower speckle noise. Moreover, the calculation time of the hologram is reduced. Experiments indicate the validity of the proposed system.

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