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- Title
Simplified Aberration Analysis Method of Holographic Waveguide Combiner.
- Authors
Su, Wei-Chia; Zhou, Shao-Kui; Lin, Bor-Shyh; Lin, Wen-Kai
- Abstract
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.
- Subjects
HEAD-mounted displays; SIMULATION software; COPLANAR waveguides; MATHEMATICAL complex analysis; HOLOGRAPHY; HOLOGRAPHIC interferometry; ASTIGMATISM; WAVEGUIDES
- Publication
Photonics, 2020, Vol 7, Issue 3, p71
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics7030071