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Beam Shape Control System with Cylindrical Lens Optics for Optical Wireless Power Transmission

Author

Listed:
  • Kenta Moriyama

    (Laboratory for Future Interdisciplinary Research of Science and Technology (First), Institute of Integrated Research (IIR), Institute of Science Tokyo, Yokohama 226-8503, Japan)

  • Kaoru Asaba

    (Laboratory for Future Interdisciplinary Research of Science and Technology (First), Institute of Integrated Research (IIR), Institute of Science Tokyo, Yokohama 226-8503, Japan)

  • Tomoyuki Miyamoto

    (Laboratory for Future Interdisciplinary Research of Science and Technology (First), Institute of Integrated Research (IIR), Institute of Science Tokyo, Yokohama 226-8503, Japan)

Abstract

Due to its narrow divergence, optical wireless power transmission (OWPT) is promising for long-distance transmission systems. In OWPT systems, matching the beam shape with the solar cell geometry is crucial for both efficiency and safety. When the light is incident at an oblique angle, the beam is distorted in an axial direction, which requires appropriate beam shape control. In this study, a cylindrical lens system was designed to ensure uniform and effective light beam irradiation, even under oblique incidence conditions. A numerical model of the optical system was constructed, and it was experimentally confirmed that the beam shape could be controlled within 5% error over a transmission range of 1 m. The optical system was integrated with solar cell detection for consistent target recognition and beam irradiation, and its functionality was experimentally validated. The results are useful for expanding the application and infrastructure design in OWPT.

Suggested Citation

  • Kenta Moriyama & Kaoru Asaba & Tomoyuki Miyamoto, 2025. "Beam Shape Control System with Cylindrical Lens Optics for Optical Wireless Power Transmission," Energies, MDPI, vol. 18(9), pages 1-17, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:9:p:2310-:d:1647190
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