scholarly journals Acceleration and expansion of a photorealistic computer-generated hologram using backward ray tracing and multiple off-axis wavefront recording plane methods

2020 ◽  
Vol 28 (23) ◽  
pp. 34994
Author(s):  
Minyuan Sun ◽  
Yuan Yuan ◽  
Yong Bi ◽  
Shuo Zhang ◽  
Jianying Zhu ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Computer Generated Hologram

Occlusion calculation algorithm for computer generated hologram based on ray tracing

2019 ◽  
Vol 443 ◽  
pp. 76-85 ◽  
Author(s):  
Shuangting Liu ◽  
Hui Wei ◽  
Ni Li ◽  
Zihan Liu ◽  
Jiaqi Zhang
Keyword(s):  
Ray Tracing ◽  
Calculation Algorithm ◽  
Computer Generated Hologram

scholarly journals Simplified Aberration Analysis Method of Holographic Waveguide Combiner

Photonics ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 71
Author(s):  
Wei-Chia Su ◽  
Shao-Kui Zhou ◽  
Bor-Shyh Lin ◽  
Wen-Kai Lin
Keyword(s):  
Image Quality ◽  
Ray Tracing ◽  
Complex Analysis ◽  
Analysis Method ◽  
3D Display ◽  
Ray Tracing Method ◽  
Head Mounted Display ◽  
Computer Generated Hologram ◽  
Display Function ◽  
Tracing Method

Generally, the diffractive waveguide combiner and computer-generated hologram (CGH) technique have the potential to achieve compact head-mounted display (HMD) with a natural 3D display function. However, the diffractive waveguide combiner will degrade the image quality because of aberration. In order to resolve this issue, the complex analysis based on the ray-tracing method is necessary. Since the major aberration of the waveguide combiners is only astigmatism and anamorphic distortion, only these two aberrations were discussed in this paper. Furthermore, two common waveguide structures were discussed here. In total, four formulas were summarized to analyze aberration and anamorphic distortion in these two structures. Finally, the simplified formulas were verified with the commercial ray-tracing software Zemax. The calculated results of the proposed method match the simulation of Zemax software well. Therefore, the aberration of an arbitrary similar diffractive waveguide can be analyzed by the proposed method. This will make the designing process simpler and faster.

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