Schedule 1 [OWPTp-08] Power Supply Efficiency of Optical Wireless Power Transmission Systems Using Visible LEDs and Silicon Solar Cells *Haruka Yokoyama1, Tomohiro Yamaguchi1, Yasuhisa Ushida2, Hiroki Hirukawa1, Takeyoshi Onuma1, Tohru Honda1 (1. Kogakuin University, 2. Nagoya University)