14.2: Reduction of speckle noise by spatial‐multiplexing pixel separation in computer generated holographic display

2019 ◽  
Vol 50 (S1) ◽  
pp. 137-139
Author(s):  
Jia Jia ◽  
Baolin Tan ◽  
Jianghui Kang ◽  
Yiying Pu ◽  
Yu Wu
Keyword(s):  
Speckle Noise ◽  
Spatial Multiplexing ◽  
Holographic Display

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.

A holographic display based on spatial multiplexing

2013 ◽  
Author(s):  
Jung-Young Son ◽  
Oleksii Chernyshov ◽  
Min-chul Park ◽  
Wook-Ho Son ◽  
Beom-Ryeol Lee ◽  
...  
Keyword(s):  
Spatial Multiplexing ◽  
Holographic Display

Speckle noise suppression method in holographic display using time multiplexing

2017 ◽  
Vol 56 (6) ◽  
pp. 063107 ◽  
Author(s):  
Su-Juan Liu ◽  
Di Wang ◽  
Song-Jie Li ◽  
Qiong-Hua Wang
Keyword(s):  
Noise Suppression ◽  
Speckle Noise ◽  
Holographic Display ◽  
Suppression Method

P-92: A Holographic Display System with Suppressed Speckle Noise

2017 ◽  
Vol 48 (1) ◽  
pp. 1596-1598
Author(s):  
Su-juan Liu ◽  
Di Wang ◽  
Qiong-Hua Wang
Keyword(s):  
Speckle Noise ◽  
Display System ◽  
Holographic Display

P‐84: A Method to Suppress the Speckle Noise of the Holographic Display Using Spatiotemporal Multiplexing Technology

2019 ◽  
Vol 50 (1) ◽  
pp. 1549-1552
Author(s):  
Nan-Nan Li ◽  
Su-Juan Liu ◽  
Di Wang ◽  
Qiong-Hua Wang
Keyword(s):  
Speckle Noise ◽  
Holographic Display

33‐3: Viewing Angle Enhanced DMD Holographic Display with Reduced Speckle Noise

2020 ◽  
Vol 51 (1) ◽  
pp. 474-477
Author(s):  
Byounghyo Lee ◽  
Dongheon Yoo ◽  
Jinsoo Jeong ◽  
Dukho Lee ◽  
Byoungho Lee
Keyword(s):  
Speckle Noise ◽  
Viewing Angle ◽  
Holographic Display
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