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- W2919511894 abstract "Ghost images at an image plane in a laser imaging system where a pixelated detector of a Charged Coupled Device (CCD) or Complementary Metal-Oxide-Semiconductor (CMOS) digital camera, or other digital imaging system, are caused by reflections of light from the optical media of the imaging system, wherein the optical media have non-zero reflection and transmission coefficients. The non-zero reflection and transmission of light is a result of the difference in the refractive index on either side of the interface. At the interface, a portion of the incident light from a laser beam is transmitted at the surface of the optical media, while another portion of the incident light is reflected. The reflected light then propagates back to another optical media surface, which is reflected again and eventually propagates to the image plane, resulting in the pixelated detector sensing a ghost image. The ghost image is undesirable because it negatively affects the ability of the pixelated detector to accurately measure the laser beam or distort an image. While antireflection coatings for the optical media are employed for reducing the ghost images, even the best anti-reflection coatings are not effective in mitigating the ghost reflections in applications utilizing pixelated detectors that are extremely sensitive to the ghost images or when the wavelength band is broader then about 25 - 50 nm. We show a novel method to mitigate a second surface Fresnel reflection by more than a factor of 10 better than existing antireflection coatings." @default.
- W2919511894 created "2019-03-11" @default.
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- W2919511894 date "2019-03-04" @default.
- W2919511894 modified "2023-09-24" @default.
- W2919511894 title "Novel method to mitigate ghost images in laser beam diagnostic and laser vision systems" @default.
- W2919511894 cites W1973490400 @default.
- W2919511894 doi "https://doi.org/10.1117/12.2507910" @default.
- W2919511894 hasPublicationYear "2019" @default.
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