A study of optimal viewing distance in a parallax barrier 3D display |
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| Authors: | Kuo‐Chung Huang Yi‐Heng Chou Lang‐chin Lin Hoang Yan Lin Fu‐Hao Chen Ching‐Chiu Liao Yi‐Han Chen Kuen Lee Wan‐Hsuan Hsu |
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| Affiliation: | 1. Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, , Taipei, Taiwan;2. 3D Display System Department, Electronics & Optoelectronics Research Laboratories, Industrial Technology Research Institute, , Chutung, Hsinchu, Taiwan |
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| Abstract: | The optimal viewing distance was proposed as a parameter for designing a parallax barrier 3D display. It can be designed based on simple geometric method and by considering the pitches of image display pixels and parallax barrier, or even including the aperture ratios of the image display pixels and parallax barrier. It can be analyzed by using ray tracing method. By considering the optical refraction index of the cover glass, the angular behavior of the system becomes more realistic; however, the geometric method is difficult to be used. We propose a revised method for estimating the view distance and angular behavior. In this paper, we have demonstrated a designated eye position (DEP) for each view and shown that multiple DEPs make a circular curve around the center of the display. We prove the new concept by comparing the optical ray tracing calculations and optical measurement. |
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| Keywords: | autostereoscopic display optimal (optimum) viewing distance designated eye position viewing zone |
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