Multiple light projection type image display apparatus combining and projecting lights from light sources and control apparatus therefor
View Patent ↗In a control apparatus for use in a multiple light projection type image display apparatus, the control apparatus includes a light source driver part configured to drive a plurality of light sources; and an apparatus controller configured to control the light source driver part. The light source driver part drives the plurality of light sources at respective different frequencies.
1. A control apparatus for use in a multiple light projection type image display apparatus including a plurality of light sources, the control apparatus comprising:
a plurality of light source driver parts configured to drive a plurality of light sources respectively; and
an apparatus controller configured to control the plurality of light source driver parts,
wherein each of the plurality of light source driver parts includes a switching power supply circuit,
wherein the plurality of light source driver parts are provided in correspondence with the plurality of light sources respectively, and
wherein the apparatus controller controls the plurality of light source driver parts to drive the switching power supply circuits at operation frequencies different from each other.
2. The control apparatus for use in the multiple light projection type image display apparatus as claimed in claim 1 ,
wherein the apparatus controller controls the light source driver parts to output a plurality of different frequencies to the plurality of light sources, and
wherein the apparatus controller controls a switchover part for performing switchover of an output from the light source driver part so that signals of the plurality of frequencies are inputted to the plurality of light sources.
3. The control apparatus for use in the multiple light projection type image display apparatus as claimed in claim 1 ,
wherein the apparatus controller controls the light source driver parts so that frequency differences upon driving the plurality of light sources each become equal to or greater than a predetermined value.
4. The control apparatus for use in the multiple light projection type image display apparatus as claimed in claim 1 ,
wherein the light source driver parts output signals of a plurality of different frequencies to the plurality of light sources, and
wherein the apparatus controller controls a switchover part for performing switchover of an output signal from the light source driver part so that the signals of the plurality of frequencies are inputted to the plurality of light sources.
5. The control apparatus for use in the multiple light projection type image display apparatus as claimed in claim 4 ,
wherein the light source driver parts drive the plurality of light sources so that the frequency differences upon driving the plurality of light sources each become equal to or greater than a predetermined value.
6. A multiple light projection type image display apparatus comprising:
a plurality of light sources;
a plurality of light source driver parts configured to drive the plurality of light sources respectively; and
an apparatus controller configured to control the plurality of light source driver parts,
wherein each of the plurality of light source driver parts includes a switching power supply circuit,
wherein the plurality of light source driver parts are provided in correspondence with the plurality of light sources respectively, and
wherein the apparatus controller controls the plurality of light source driver parts to drive the switching power supply circuits at operation frequencies different from each other.