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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Visible ghost imaging with nonvisible light.

Deyang Duan, Lu Zhang, Yunjie Xia

    Journal of the Optical Society of America. A, Optics, Image Science, and Vision
    |April 4, 2014
    PubMed
    Summary

    This study introduces visible ghost imaging using nonvisible light, improving upon traditional thermal imaging. This novel technique produces clear, colorful images and may lead to new night-vision technology.

    Area of Science:

    • Optics and Photonics
    • Image Processing

    Background:

    • Conventional thermal imaging faces limitations.
    • Ghost imaging relies on intensity correlations.

    Purpose of the Study:

    • To present a novel visible ghost imaging scheme using nonvisible light.
    • To overcome the disadvantages of conventional thermal imaging.

    Main Methods:

    • Utilizing infrared light as the object beam.
    • Employing visible light as the reference beam.
    • Leveraging intensity correlations for image reconstruction.

    Main Results:

    • A visible and colorful ghost image was obtained from nonvisible light.
    • The new method surpasses thermal imaging in color and image quality.

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  • Ghost imaging effectively mitigates interference light effects.

    • Conclusions:

    • The developed visible ghost imaging with nonvisible light offers superior image quality.
    • This technique presents a promising foundation for advanced night-vision applications.