P-96: Augmented Reality Holographic Display System Free of Zero-order and Conjugate Images

2018 ◽  
Vol 49 (1) ◽  
pp. 1542-1544
Author(s):  
Chun-Chi Chan ◽  
Chih-Hao Chuang ◽  
Chien-Yu Chen ◽  
Hong-Yan Lin

Optik ◽  
2017 ◽  
Vol 149 ◽  
pp. 239-245 ◽  
Author(s):  
Yanfeng Su ◽  
Zhijian Cai ◽  
Quan Liu ◽  
Peiliang Guo ◽  
Yifan Lu ◽  
...  


Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 204
Author(s):  
Di Wang ◽  
Yi-Wei Zheng ◽  
Nan-Nan Li ◽  
Qiong-Hua Wang

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.



Author(s):  
Khalaeb Richardson ◽  
Anne Collins McLaughlin ◽  
Mitchell McDonald ◽  
Aaron Crowson

Many environments contain visual and auditory distractions. Cognitive aids help limit these distractions, support attention, and improve task performance. One way this is done is by adding information to the environment via Augmented Reality (AR). Attention may also be supported by removing distractors using Diminished Reality (DR), a form of AR that computationally erases, de-emphasizes, or otherwise diminishes external stimuli. However, there was no research investigating the design of the control and display system for DR technology and the question of how to redirect or gain someone’s attention when their environment is diminished had not been addressed. This study explored the acceptability and effectiveness of notifications with varying attributes and fills that gap in research. Results indicated that low specificity notifications in a diminished environment are rated as being subjectively better than notifications of other formats; low specificity messages were also recalled at a greater rate.



2016 ◽  
Vol 36 (7) ◽  
pp. 0709001
Author(s):  
马建设 Ma Jianshe ◽  
程炳超 Cheng Bingchao ◽  
曹文波 Cao Wenbo ◽  
苏萍 Su Ping ◽  
曹良才 Cao Liangcai


2016 ◽  
Vol 41 (11) ◽  
pp. 2486 ◽  
Author(s):  
Gang Li ◽  
Dukho Lee ◽  
Youngmo Jeong ◽  
Jaebum Cho ◽  
Byoungho Lee


2017 ◽  
Author(s):  
Zachary Baum ◽  
Tamas Ungi ◽  
Andras Lasso ◽  
Gabor Fichtinger


2016 ◽  
Vol 47 (1) ◽  
pp. 1443-1445
Author(s):  
Rong Wei ◽  
Di Wang ◽  
Qiong-Hua Wang


1993 ◽  
Author(s):  
Jeffrey H. Kulick ◽  
Stephen T. Kowel ◽  
Thomas M. Leslie ◽  
R. Ciliax


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