Current Optics and Photonics

Optical Society of Korea (한국광학회)
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All-fiber RGB Laser Light Source of Head-up Display System for Automobile Application

  • Lee, Jonggwan (Advanced Photonics Research Institute, Gwangju Institute of Science and Technology) ;
  • Kim, Kyungwon (Advanced Photonics Research Institute, Gwangju Institute of Science and Technology) ;
  • Son, Seong-Jin (Department of Physics and Photon Science, Gwangju Institute of Science and Technology) ;
  • Kim, Bok Hyeon (Advanced Photonics Research Institute, Gwangju Institute of Science and Technology) ;
  • Yu, Nan Ei (Advanced Photonics Research Institute, Gwangju Institute of Science and Technology)
  • Received : 2019.12.11
  • Accepted : 2020.04.20
  • Published : 2020.06.25
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Abstract

We developed an all-fiber RGB laser light source module for application in an automobile head-up display. It is based on laser diodes and an optical fiber combiner that substantially enhances the flexibility of configuration and stability against harsh working conditions for automobiles. We coupled 13 laser diodes with optical fibers and merged them into a single output with a beam combiner device. Red (R), green (G), and blue (B) laser sources were employed to produce primary colors that were mixed into a white light output. An optical output power of approximately 1.5 W was achieved, and the color balance of the output lights was assessed based on the CIE 1931 color space. The optical output power was shown to be stable for over 160 h within an optical fluctuation of less than 0.27%.

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References

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