Patent ID: 6992812

Claim:
An image display apparatus, comprising: a light source; a plurality of optical modulation devices in the form of gating light valve (GLV) devices, each including a plurality of fixed electrodes and a plurality of displaceable electrodes positioned adjacent said fixed electrodes and individually displaced or deformed in response to a driving signal applied thereto to form offsets from said fixed electrodes so that illumination light from said light source incoming to one of faces of said fixed and displaceable electrodes is modulated in accordance with the offsets such that the modulated lights from said optical modulation devices are arrayed linearly to form a one-dimensional image; image display means for being illuminated with the modulated lights to form an image; a spatial filter (SFT) to select, from among lights produced by the GLV devices, first order diffracted lights which have the highest intensite and are to be used to display sand image; a driving circuit for applying the driving signals to the electrodes of said optical modulation devices in response to an input signal thereto; an initial driving signal production circuit for producing an initial driving signal for driving said optical modulation devices from the input signal; and correction means interposed between said initial driving signal production circuit and said driving circuit for determining, from a target light intensity for the modulated lights to be emitted from said optical modulation devices in response to the initial driving signal and intensities of the modulated lights emitted from said optical modulation devices in response to the driving signals, values of the driving signals for said optical modulation devices corresponding to the target light intensity and inputting the driving signals of the determined values to said driving circuit.