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A Bionic Compound Eye-Inspired Micro-Nano Integrated Polarization Sensor: Polarization Detection and Solar

Qing Guo1,2, Jinshan Li1,2, Panjun Zhang3

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A new miniature bionic compound eye polarization (MBCEP) sensor offers compact, lightweight, and integrated polarization sensing. This novel sensor accurately captures sky polarization for precise sun position measurements.

Keywords:
curved microlens arraysmetamaterialnanoimprint lithographyommatidiapolarization sensor

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Area of Science:

  • Optoelectronics
  • Biomimetic sensors
  • Polarization imaging

Background:

  • Advancements in polarization sensors are driven by localization needs using sky-polarized light.
  • A significant gap exists in compact, lightweight, and highly integrated polarization sensors.
  • Cost-effective manufacturing of high-quality polarization sensors is crucial.

Purpose of the Study:

  • To design and implement a miniature bionic compound eye polarization (MBCEP) sensor.
  • To leverage biomimicry inspired by the mantis shrimp's compound eyes.
  • To develop a compact and efficient polarization sensing solution.

Main Methods:

  • Fabrication of curved microlens arrays (CMLAs) using ultraprecision machining and hot embossing.
  • Integration of metamaterials with a CMOS sensor via nanoimprint lithography (NIL) and aluminum thermal evaporation.
  • Real-time polarization data processing using a Field-Programmable Gate Array (FPGA).

Main Results:

  • The MBCEP sensor is compact (84 × 82 × 34 mm) and lightweight (approx. 65 g).
  • Established a sky polarization distribution model and a dedicated testing system for calibration.
  • Experimental validation confirmed accurate polarization imaging and polarized light capture.

Conclusions:

  • The MBCEP sensor successfully captures polarized sky information for precise sun position determination.
  • The developed sensor addresses the need for compact, integrated polarization sensing.
  • The manufacturing process shows potential for cost-effective, high-quality sensor production.