Angle Sensitive Optical Sensor for Light Source Tracker Miniaturization

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An angle sensitive optical sensor without conventional optics is presented in this article. The reported device omits the need for adding 3-D optics in postprocessing by monolithic integration of complimentary metal-oxide semiconductor compatible diffraction grating layers, which cuts down the fabrication costs and allows for miniaturization of these types of sensors. The sensor resolves angular information from a monochromatic light source over a single axis with a mean absolute accuracy of 0.6° in an investigated $\pm 26$° field-of-view using four unique pixels. This letter facilitates miniaturization of light source trackers, such as sun position sensors on small satellites of the future.

Original languageEnglish
Article number3501404
Number of pages4
JournalIEEE Sensors Letters
Issue number6
Publication statusPublished - 2022

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Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • Optical sensors
  • angle sensitive pixels (ASPs)
  • diffraction gratings
  • optical sensor
  • opto-electronic system
  • sun position sensor


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