invisible image

invisible image

[in′viz·ə·bəl ′im·ij]
(physics)
An image having a form which cannot be perceived by unaided vision, such as a latent image on a photographic emulsion.
References in periodicals archive ?
AuthentiGuard(TM) VeriGlow - an invisible image system which can be seen by passport scanners currently installed around the world.
The light from your scene actually changes the electrical charge in each silver halide crystal, making an invisible image, or latent image, that is sensitive to film developer (a chemical used to develop film).
In some of the photographs, the picture stands like a screen in front of another, invisible image, dissolving the vanishing point that photography usually puts into focus.
Badesha's early inventions helped improve photoreceptors, the surface that carries the invisible image of a document after it's been exposed to light.