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Flattop beam illumination for 3D imaging ladar with simple optical devices in the wide distance range

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Abstract

We have developed an illumination optical system for 3D imaging ladar (laser detection and ranging) which forms flattop beam shape by transformation of the Gaussian beam in the wide distance range. The illumination is achieved by beam division and recombination using a prism and a negative powered lens. The optimum condition of the transformation by the optical system is derived. It is confirmed that the flattop distribution can be formed in the wide range of the propagation distance from 1 to 1000 m. The experimental result with the prototype is in good agreement with the calculation result.

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References

  1. Jarvis, R. A.: A perspective on range finding techniques for computer vision. IEEE Trans. Pattern Anal. Mach. Intell. PAMI-5, 122–139 (1983)

    Article  Google Scholar 

  2. Carmer, D.C., Peterson, L.M.: Laser radar in robotics. Proc. IEEE 84, 299–320 (1996)

    Article  Google Scholar 

  3. Kameyama, S., Imaki, M., Tamagawa, Y., Akino, Y., Hirai, A., Ishimura, E., Hirano, Y.: 3D imaging LADAR with linear array devices laser, detector and ROIC. Proc. SPIE 7382, 738209 (2009)

    Article  Google Scholar 

  4. Cullis, A.G., Webber, H.C., Bailey, P.: A device for laser beam diffusion and homogenization. J. Phys. E Sci. Instrum. 12, 688–689 (1979)

    Article  ADS  Google Scholar 

  5. Veldkamp, W.B.: Laser beam profile shaping with interlaced binary diffraction gratings. Appl. Opt. 21, 3209–3212 (1982)

    Article  ADS  Google Scholar 

  6. Hoffnagle, J.A., Jefferson, C.M.: Design and performance of a refractive optical system that converts a Gaussian to a flattop beam. Appl. Opt. 39, 5488–5499 (2000)

    Article  ADS  Google Scholar 

  7. Dagenais, D.M., Woodroffe, J.A., Itzkan, I.: Optical beam shaping of a high power laser for uniform target illumination. Appl. Opt. 24, 671–675 (1985)

    Article  ADS  Google Scholar 

  8. Montaut, J.P.G., Li, J.C., Montaut, C.G.: Optical device analysis for uniform intensity irradiation from a high energy Gaussian laser beam. Optical Sys. Comm. 57, 161–165 (1986)

    Article  Google Scholar 

  9. Kawamura, Y., Itagaki, Y., Toyoda, K., Namba, S.: A simple optical device for generating square flat-top intensity irradiation from a Gaussian laser beam. Optical Sys. Comm. 48, 44–46 (1983)

    Article  ADS  Google Scholar 

  10. Sziklas, E.A., Siegman, A.E.: Diffraction calculations using fast Fourier Transform methods. Proc. IEEE 62, 410–412 (1974)

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Information Technology R&D Center, Mitsubishi Electric Corporation, 5-1-1 Ofuna, Kamakura, Kanagawa, 247-8501, Japan

    Hidenobu Tsuji, Takayuki Nakano, Yoshihiro Matsumoto & Shumpei Kameyama

Authors
  1. Hidenobu Tsuji
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  2. Takayuki Nakano
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  3. Yoshihiro Matsumoto
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  4. Shumpei Kameyama
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Correspondence to Hidenobu Tsuji.

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Tsuji, H., Nakano, T., Matsumoto, Y. et al. Flattop beam illumination for 3D imaging ladar with simple optical devices in the wide distance range. Opt Rev 23, 155–160 (2016). https://doi.org/10.1007/s10043-016-0194-x

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  • DOI: https://doi.org/10.1007/s10043-016-0194-x

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