초록 ▼

Color display system, which includes an electrooptic modulation screen (LCD) and in which a chromatic modulator (RC) is provided between the multiple-wavelength light source (S, C) and the screen (LCD). This chromatic modulator modulates a wavelength or a restricted range of wavelengths of the sourc

Color display system, which includes an electrooptic modulation screen (LCD) and in which a chromatic modulator (RC) is provided between the multiple-wavelength light source (S, C) and the screen (LCD). This chromatic modulator modulates a wavelength or a restricted range of wavelengths of the source in order to adjust the saturation of the various primaries transmitted to the screen as well as to effect colorimetric balance. Applications include liquid-crystal color displays.

대표청구항 ▼

1. An illumination system for an electrooptic colour display screen, comprising:a polychrome light source; a spatio-chromatic separation system receiving a polychrome light beam coming from said polychrome light source and transmitting a plurality of illuminating light beams having different wavelen

1. An illumination system for an electrooptic colour display screen, comprising:a polychrome light source; a spatio-chromatic separation system receiving a polychrome light beam coming from said polychrome light source and transmitting a plurality of illuminating light beams having different wavelength ranges and in different directions; an electrooptic display screen having a plurality of image elements, each one of said plurality of image elements having a plurality of display elements; and at least one chromatic modulation device provided between said polychrome light source and said display screen, said at least one chromatic modulation device being tuned to a predetermined wavelength and transmitting a predetermined portion of light energy which it receives at said predetermined wavelength to said display screen, wherein each one of said plurality of image elements has a number of said plurality of display elements equal to a number of said plurality of illuminating light beams, and wherein said spatio-chromatic separation system is a holographic device receiving a beam containing a plurality of primary beams and transmitting each one of said plurality of primary beams in a respective different direction.