A light apparatus with mixed light output, the light apparatus comprising: multiple LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695), each LED module (651, 654, 655, 656, 694, 695) comprising a package housing shared by multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653), the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) of each package housing having separate electrodes (636, 637), the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) sharing the package housing for emitting lights with different optical characteristics; a control circuit (650, 691) for determining currents supplied to the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) separately for generating a mixed light output with requested optical parameters, thereby allowing the different ones of the multiple LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695) to be controlled separately so as to emit different mixed lights by the LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695) have the same LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653); and a driver module (649, 692) for electrically connecting to the electrodes (636, 637) of the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) and connecting to the control circuit (650, 691) for selectively supplying the currents to multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) of the multiple LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695), characterized in that the different LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) of the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) comprise the same LED chips (633, 634, 645, 646) covered with different first fluorescent layers (643, 644) and a same second fluorescent layer, the first fluorescent layers (643, 644) have less area than the second fluorescent layer. multiple LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695), each LED module (651, 654, 655, 656, 694, 695) comprising a package housing shared by multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653), the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) of each package housing having separate electrodes (636, 637), the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) sharing the package housing for emitting lights with different optical characteristics; a control circuit (650, 691) for determining currents supplied to the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) separately for generating a mixed light output with requested optical parameters, thereby allowing the different ones of the multiple LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695) to be controlled separately so as to emit different mixed lights by the LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695) have the same LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653); and a driver module (649, 692) for electrically connecting to the electrodes (636, 637) of the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) and connecting to the control circuit (650, 691) for selectively supplying the currents to multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) of the multiple LED modules (111, 112, 113, 114, 115, 651, 654, 655, 656, 694, 695), characterized in that the different LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) of the multiple LED regions (612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 638, 639, 652, 653) comprise the same LED chips (633, 634, 645, 646) covered with different first fluorescent layers (643, 644) and a same second fluorescent layer, the first fluorescent layers (643, 644) have less area than the second fluorescent layer.