• High-concentration wide-angle tracking integration with stacked lens arrays 

      Johnsen, Håkon Jarand Dugstad; Aksnes, Astrid; Torgersen, Jan (Chapter, 2019)
      Tracking-integration can reduce or eliminate the need for external solar tracking in CPV (concentrator photovoltaics). Previous research has shown how tracking-integrated systems can achieve high concentration ratios, wide ...
    • High-performance stationary solar tracking through multi-objective optimization of beam-steering lens arrays 

      Johnsen, Håkon Jarand Dugstad; Aksnes, Astrid; Torgersen, Jan (Peer reviewed; Journal article, 2020)
      Beam-steering lens arrays enable solar tracking using millimeter-scale relative translation between a set of lens arrays. This may represent a promising alternative to the mechanical bulk of conventional solar trackers, ...
    • Novel Low Cost Solar Thermal Energy Concepts for Developing Countries 

      Johnsen, Håkon Jarand Dugstad (Master thesis, 2017)
      Small scale solar thermal energy devices such as solar cookers are promising solutions for remote areas where other energy sources are limited, for instance in developing countries. These devices can be used directly for ...
    • Pushing the limits of beam-steering lens arrays 

      Johnsen, Håkon Jarand Dugstad; Aksnes, Astrid; Torgersen, Jan (Journal article; Peer reviewed, 2019)
      An essential part of a concentrated solar power system is the solar tracker. Tracking is usually implemented by rotating the entire optical system to follow the sun, adding to the bulk and complexity of the system. ...
    • Solar tracking using beam-steering lens arrays 

      Johnsen, Håkon Jarand Dugstad; Torgersen, Jan; Aksnes, Astrid (Chapter, 2018)
      Conventional tracking solar concentrators track sunlight by rotating the concentrator optics to face the sun, which adds to the cost and bulk of the system. Beam-steering lens arrays, in contrast, allow solar tracking ...