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31 May 2017 Point light source display with a large viewing angle using multiple illumination sources
Densmaa Batbayar, Nomin-Erdene Dalkhaa, Munkh-Uchral Erdenebat, Nam Kim, Ganbat Baasantseren
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Optical Engineering, Vol. 56, Issue 5, 053113 (May 2017). https://doi.org/10.1117/1.OE.56.5.053113
Abstract
A point light source (PLS) display with enhanced viewing angle (VA) is proposed. The maximum VA of a conventional PLS display is equal to the propagation angle of the PLS, so a light-source array (3×3) was used to enlarge the propagation angle of the PLS in the horizontal and vertical directions. The number of converging elemental image points increases due to the large propagation angle of the PLS; thus, the VA of the integrated point was enhanced. From the experimental results, the VA of the proposed method was 2.6 times larger than the maximum VA of a conventional PLS display.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Densmaa Batbayar, Nomin-Erdene Dalkhaa, Munkh-Uchral Erdenebat, Nam Kim, and Ganbat Baasantseren "Point light source display with a large viewing angle using multiple illumination sources," Optical Engineering 56(5), 053113 (31 May 2017). https://doi.org/10.1117/1.OE.56.5.053113
Received: 8 February 2017; Accepted: 8 May 2017; Published: 31 May 2017
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Cited by 7 scholarly publications and 2 patents.
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KEYWORDS
Light sources
Image enhancement
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