1 March 2013 Measurement of the optical characteristics of electrowetting prism array for three-dimensional display
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Proceedings Volume 8643, Advances in Display Technologies III; 864305 (2013) https://doi.org/10.1117/12.2003577
Event: SPIE OPTO, 2013, San Francisco, California, United States
Recently liquid-based optical devices are emerging as attractive components in three-dimensional (3D) display for its compact structure and fast response time. Among them an electrowetting prism array is one of the promising 3D devices. It steers a beam, which enables to provide corresponding perspectives to observer. For high quality autostereoscopic 3D displays the important factors are the beam steering angle and the beam profile, the optical characteristics. In this paper, we propose a method to measure the optical characteristics of the liquid prism and show experimental results on our prototype electrowetting prism array, which consists of prisms with 200um by 200um size. A modified 4-f system is adopted for the proposed method. It provides two kinds of information of the optical characteristics of the liquid prism at the image plane and at the Fourier plane. First, the proposed measurement setup magnifies the image of the liquid micro prism array so that we can observe the status of the each prism array directly with bare eye and align a mask easily for selecting a prism to be examined at the image plane. Secondly, the steering angle can be calculated by measuring the displacement of the beam at the Fourier plane, where the angular profiles that have important information on the oilwater interface is observed precisely. The principle of the proposed method will be explained, and the measured optical characteristics from experimental results on the liquid prism we fabricated will be provided, which proves the validity of the measurement method.
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Yunhee Kim, Yunhee Kim, Yoon-Sun Choi, Yoon-Sun Choi, Kyuwhan Choi, Kyuwhan Choi, Yongjoo Kwon, Yongjoo Kwon, Jungmok Bae, Jungmok Bae, Alexander Morozov, Alexander Morozov, Hong-Seok Lee, Hong-Seok Lee, "Measurement of the optical characteristics of electrowetting prism array for three-dimensional display", Proc. SPIE 8643, Advances in Display Technologies III, 864305 (1 March 2013); doi: 10.1117/12.2003577; https://doi.org/10.1117/12.2003577

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