Color display device in which the area of a spherical lens equals the area of a set of RGB sub-pixels

DETAILED DESCRIPTION More precisely, the subject of the invention is a color display device comprising a light source (S) simultaneously emitting several ranges of chromatic components (R, G, B) and a spatial light modulator (LCD) comprising a set of triples of sub-pixels aligned along an axis x, each triple having a dimension sp.
sub.
x along this axis x, each sub-pixel corresponding to a chromatic component to be displayed, characterized in that it also includes between the light source (S) and the spatial light modulator (LCD); at least one chromatic separator (RC) angularly separating along different directions the light of the various chromatic ranges (R, G, B); an array of spherical lenses (MLC) enabling the light of each chromatic range to be focused substantially on a sub-pixel, the said array of lenses having dimensions substantially equal to those of the spatial light modulator and each lens having a cross section defined by the dimensions Px and Py if ly is the dimension along an axis y perpendicular to the axis x, the axes x and y corresponding to the axes of the plane (Px, Py) defined by the spatial light modulator, the said cross section having the same area as that of a triple but the dimension lx of which along the axis x is smaller than the dimension 3 sp.
sub.
x.
In the device according to the invention, the light modulator can advantageously be a liquid crystal screen.
The array of spherical lenses (MLC) can be affixed to the spatial light modulator (LCD).