High brightness light source using light emitting devices of different wavelengths and wavelength conversion

A display system comprising:

• two or more light emitting devices for generating lights having respective spectra different from each other;
• a wavelength-division multiplexer for receiving the light from the two or more light emitting devices and for combining them into a combined light which exits an output end of the wavelength-division multiplexer;
• a wavelength conversion material disposed near the output end of the wavelength-division multiplexer to absorb the combined light and emit an output light, the wavelength conversion material emitting lights of different colors when absorbing lights from different ones of the two or more light emitting devices;
• a micro-display device for directing the light emitted by the wavelength conversion material to a screen;
• and
• a signal processor coupled to and controlling the two or more light emitting devices and the micro-display device.

An illumination system comprising:

• two or more light emitting devices for generating lights having respective spectra different from each other;
• a wavelength-division multiplexer for receiving the light from the two or more light emitting devices and for combining them into a combined light which exits an output end of the wavelength-division multiplexer;
• a wavelength conversion material disposed near the output end of the wavelength-division multiplexer to absorb the combined light and emit an output light, the wavelength conversion material emitting lights of different colors when absorbing lights from different ones of the two or more light emitting devices;
• and
• a control circuit coupled to and controlling the two or more light emitting devices.