METHOD FOR ILLUMINATING A DISPLAY USING A SECONDARY OPTICAL ELEMENT AND A LIGHT-DIFFUSING SUBSTRATE, DEVICE FOR ILLUMINATING A DISPLAY

摘要

The invention relates to methods and devices for controlling the intensity and direction of light emerging from an independent source, inter alia to design-based interactions of optical devices in particular for systems for illuminating coloured liquid crystal displays. The method comprises redirecting radiation from sources with the aid of lenses (reflectors). The radiation is redirected onto a light-diffusing substrate and uniformly illuminated sections are produced which in turn form a uniform illumination of the display. The technical result of the use of the present invention consists in improving the light characteristics of displays such as efficiency, lighting homogeneity, and reducing the cost of the system by virtue of the use of lenses (reflectors) with one working surface and a smaller number of highly effective light sources (light-emitting diodes).