Projection system, beam generating apparatus thereof, and beam generating method

A projection system comprising:

• a beam generating apparatus, adapted to transmit a source beam, and the beam generating apparatus comprising:
• a plurality of light emitting devices, respectively generating a plurality of color lights with different wavelengths;
• a plurality of drivers, respectively serially coupled between the light emitting devices and a reference voltage, and respectively driving the light emitting devices according to a plurality of control signals;
• and
• a first auxiliary driver, serially coupled between a first light emitting device of the light emitting devices and the reference voltage, driving the first light emitting device according to the first auxiliary control signal, and adjusting brightness of the first light emitting device according to a first regulating signal,
• wherein when the first auxiliary control signal is enabled, the control signal corresponding to the first light emitting device is disabled;
• a light valve, receiving the source beam and converting the source beam into an image beam;
• and
• a projection lens, adapted to receive the image beam.

A beam generating method, comprising:

• providing a plurality of light emitting devices to respectively generate a plurality of color lights with different wavelengths;
• providing a plurality of drivers to respectively drive the light emitting devices according to a plurality of control signals;
• and
• providing an auxiliary driver, driving a first light emitting device of the light emitting devices according to an auxiliary control signal, and adjusting brightness of the first light emitting device according to a regulating signal,
• wherein when the auxiliary control signal is enabled, the control signal corresponding the first light emitting device is disabled.