Momentary visual image apparatus
First Claim
1. A device for presenting a two-dimensional image to an observer subject to saccadic eye movements characterized by variations in brightness across the image, comprisinga fixed, one-dimensional light source comprising an array of light source areas and capable of delivering light of selectable brightness at each one of a plurality of positions along the light source, anda modulator for modulating the light source in accordance with said variations in brightness, over a time-period lasting between about 5 milliseconds and about 25 milliseconds for each displaying of said image.
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Abstract
A modulated array of lights for the creation of momentarily perceptible visual images when scanned asynchronously by the human eye during characteristic saccadic eye movements between points of eye fixation is described in the disclosure. The array and modulation style are chosen to provide an image that matches the span of the human eye/brain combination for recognition of tachistroscopically presented lines of text, other symbols, and pictoral images, and to achieve an illusory effect wherein the momentary image appears dissociated from the array of lights and appears superimposed on the scene of eye fixation just prior to initiating the saccadic movement. A preferred embodiment using light emitting diodes and large scale integrated logic circuitry is described for generation of words, phrases up to 32 characters long, and simple pictures.
75 Citations
9 Claims
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1. A device for presenting a two-dimensional image to an observer subject to saccadic eye movements characterized by variations in brightness across the image, comprising
a fixed, one-dimensional light source comprising an array of light source areas and capable of delivering light of selectable brightness at each one of a plurality of positions along the light source, and a modulator for modulating the light source in accordance with said variations in brightness, over a time-period lasting between about 5 milliseconds and about 25 milliseconds for each displaying of said image.
Specification