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Conference Paper
Distortion Analysis in Holographic Optical Elements
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- Authors
- Beom-Ryeol Lee, Hyoung Lee, Jung-Young Son, Tetiana Venkel, Wookho Son
- Issue Date
- 2020-12
- Citation
- International Display Workshops (IDW) 2020, pp.492-495
- Language
- English
- Type
- Conference Paper
- Abstract
- The distortions in digital and analogue HOEs for image projection are estimated with a Shack-Hartmann wavefront sensor. The optical characteristics of the HOEs are compared with those of a spherical mirror. The HOEs show a significant amount of wavefront distortion compared the mirror. Among the HOEs, the digitally recorded one shows more wavefront distortion. Furthermore, the digitally recorded HOE shows also astigmatism that is not shown in the mirror and the analogue HOE. It is considered that the astigmatism is caused digital nature of the HOE as in the reconstructed image from the digital holographic display. The optical characteristics of the analog HOE is much better than that of the digital in the current samples.
- KSP Keywords
- Holographic display, Holographic optical elements, Optical characteristics, Reconstructed image, Shack-Hartmann wavefront sensor, Spherical mirror, distortion analysis, image projection, wavefront distortion