Background and activities

Research interests

  • Solar energy
  • Nonimaging optics
  • Numerical optimization

Conference papers

Other work

  • H. J. D. Johnsen, A. Aksnes, and J. Torgersen, “Pushing the limits of beam-steering lens arrays,” SPIE Optics + Photonics 2019, 2019. (Presentation. Recording, Slides)
  • H. J. D. Johnsen, J. Torgersen, and A. Aksnes, “Design and fabrication of beam steering lens arrays through raytracing and maskless grayscale lithography,” 10th Annual Workshop of the Norwegian PhD Network on Nanotechnology for Microsystems, 2019. (Presentation)
  • H. J. D. Johnsen, A. Aksnes, and J. Torgersen, “High-Concentration Wide-Angle Tracking Integration with Stacked Lens Arrays,” The 15th International Conference on Concentrator Photovoltaics (CPV-15), 2019. (Presentation. Slides)
  • H. J. D. Johnsen, J. Torgersen, and A. Aksnes, “Tracking-Integrated Solar Energy Using Stacked Lens Arrays,” Norwegian Solar Cell Conference (NSCC) 2019, 2019. (Poster)
  • H. J. D. Johnsen, J. Torgersen, and A. Aksnes, “Beam-steering lens arrays for solar tracking,” First NTNU Young Researcher Clean Energy Symposium, 2019. (Presentation)
  • H. J. D. Johnsen, J. Torgersen, and A. Aksnes, “Beam-steering lens arrays for solar tracking,” NTNU Nano Symposium 2018, 2018. (Presentation)
  • H. J. D. Johnsen, J. Torgersen, and A. Aksnes, “Solar tracking using beam-steering lens arrays,” SPIE Optics + Photonics 2018, 2018. (Presentation. Recording)
  • H. J. D. Johnsen, “Interview: Håkon J. Dugstad Johnsen – Beam steering lens array for solar cooking,” SunPod podcast, 2018. (Podcast Interview)
  • H. J. D. Johnsen, J. Torgersen, and O. J. Nydal, “Beam Steering Lens Array for Solar Cooking,” The 10th International SolarZentrum Conference for food quality, solar cooking, drying, farming, and gardening, 2018. (Invited Presentation)
  • H. J. D. Johnsen, J. Torgersen, and O. J. Nydal, “Beam Steering Lens Array for Solar Cooking,” Consolfood 2018, 2018. (Presentation. Slides)