Abstract: An illuminating apparatus includes a plurality of light sources that generate a plurality of primary color light components, a reflector unit for receiving the primary color light components from the light sources, and an integrator having an input side to receive the primary color light components reflected by the reflector unit.

Abstract: A projection screen includes a lens base having a front side, a rear side, and an array of bores that extend from the rear side to the front side. Each of the bores tapers in a direction from the rear side to the front side. The front side is formed with a plurality of windows, each of which is aligned and communicated with a respective one of the bores. Light that enters the bores from the rear side of the lens base is subjected to multiple total internal reflections as the light propagates along the bores prior to exiting the lens base at the windows.

Abstract: A headlight for automobiles with a head light filament and a high beam filament installed in the same poly-ellipsoid system. A part from the necessary parts in a conventional headlight, a reflector and a high beam filament are added. Thus, a high efficiency and a clear boundary of brightness are obtained under the conditions of smaller surface area.