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Paper Abstract and Keywords
Presentation 2019-07-26 09:55
A study on application of a spatial optical modulator composed of retroreflector and PNLC
Taiga Aoyama, Mikio Maeda (Kogakuin)
Abstract (in Japanese) (See Japanese page) 
(in English) We are studying on a live video delivery system that carries images taken in the sea via a spherical repeater covered with some retro-reflective sheet. We have shown that retroreflectors help an optical transmitter track the repeater with visible light easier. However, we need lots of LEDs to send information for instruction on camera shooting from a ship on the ocean to the submarine, that is in the opposite direction to the image, and the improvement of the power efficiency had been an issue. We propose a spatial light modulator that has pieces of divided PNLC into vertically and horizontally and the retroreflective sheet. We hope to realize a large-scale modulator such as the QR code. The success of this 4x4 switchable modulator element is useful for our future design.
Keyword (in Japanese) (See Japanese page) 
(in English) Underwater visible light communication / Retroreflector, / Polymer Network Liquid Crystal / Spatial modulator / / / /  
Reference Info. ITE Tech. Rep., vol. 43, no. 23, BCT2019-67, pp. 41-44, July 2019.
Paper # BCT2019-67 
Date of Issue 2019-07-18 (BCT) 
ISSN Print edition: ISSN 1342-6893  Online edition: ISSN 2424-1970
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Conference Information
Committee BCT IEEE-BT  
Conference Date 2019-07-25 - 2019-07-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokachi-Plaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Broadcast Operating Technologies, Transmission & Reception Engineering, etc. 
Paper Information
Registration To BCT 
Conference Code 2019-07-BCT-BT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on application of a spatial optical modulator composed of retroreflector and PNLC 
Sub Title (in English)  
Keyword(1) Underwater visible light communication  
Keyword(2) Retroreflector,  
Keyword(3) Polymer Network Liquid Crystal  
Keyword(4) Spatial modulator  
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1st Author's Name Taiga Aoyama  
1st Author's Affiliation Kogakuin University (Kogakuin)
2nd Author's Name Mikio Maeda  
2nd Author's Affiliation Kogakuin University (Kogakuin)
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Speaker 19 
Date Time 2019-07-26 09:55:00 
Presentation Time 25 
Registration for BCT 
Paper # ITE-BCT2019-67 
Volume (vol) ITE-43 
Number (no) no.23 
Page pp.41-44 
#Pages ITE-4 
Date of Issue ITE-BCT-2019-07-18 


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