Patent ID: 7762703

Claim:
A heads-up display, comprising: a monochrome display device for generating an image; said monochrome display device comprising a display and a backlight for illuminating said display from its backside; and an optical device for generating a virtual image from said image of said display device; said backlight comprising: a first light source configured to selectively emit light of a first color or a second color, a second light source configured to selectively emit light of the first color and the second color, a third light source configured to selectively emit light of the first color or a third color, a fourth light source configured to selectively emit light of the first color or the third color, a first light guide coupled to said first light source, a second light guide coupled to said second light source, a third light guide coupled to said third light source, and a fourth light guide coupled to said fourth light source; said first, second, third, and fourth light guides being disposed in such close juxtaposition behind said display so that the first, second, third, and fourth light guides illuminate together the entire backside of said display and illuminate a first region of said display associated with said first light guide with said first color or said second color, a second region of said display associated with said second light guide with said first color or said second color, a third region of said display associated with said third light guide with said first color or said third color, and a fourth region of said display associated with said fourth light guide with said first color or said third color.