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Scale factor effect of RGB monochromatic speckle grains on color speckle distribution

  • Special Section: Regular Paper
  • Laser Display and Lighting Conference (LDC’ 22), Yokohama, Japan
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Abstract

A measured color speckle distribution around a white point plotted in the xyYnorm color space was compared with the color speckle distribution calculated by the conventional method. The measured and calculated color speckle were found to distribute in significantly different manners. In the measured color speckle distribution, chromaticity distributions toward the R, G, B directions were enhanced taking a more triangular shape than the calculated distribution. The scale factors of the RGB monochromatic speckle grains have not been considered in the conventional calculations. The probability distribution functions of the distance between the bright peak and the dark bottom along the row or column of the measured two-dimensional R, G, B-speckle data were analyzed for obtaining the statistical scale factors of the RGB speckles. We also discussed the reason why the measured chromaticity distribution took more triangular shape and the problems to be solved for future development of the simulator considering the scale factor effects of the RGB speckles.

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Authors and Affiliations

  1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan

    Junichi Kinoshita, Kazuhisa Yamamoto & Kazuo Kuroda

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  1. Junichi Kinoshita
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  2. Kazuhisa Yamamoto
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  3. Kazuo Kuroda
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Correspondence to Junichi Kinoshita.

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Kinoshita, J., Yamamoto, K. & Kuroda, K. Scale factor effect of RGB monochromatic speckle grains on color speckle distribution. Opt Rev 30, 100–110 (2023). https://doi.org/10.1007/s10043-022-00773-w

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