ghost image
Meaning
Any undesired image appearing at the image plane of an optical system; either a false image of the desired object, or an out-of-focus image of a bright source of light in the field of the optical system.
Synonyms
ghost signal
double image
false image
false appearance
erroneous indication
non-relevant indication
fold-over
ghost pulse
Etymology
From ghost (noun sense 3, via noun sense 4).
Notes
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