Phalaenopsis and other low light orchids do not like direct sunlight, bright light even several feet from a window can be adequate. The high light ones are the cattleya and vanda, although there are exceptions in those groups. With lights, the plant should be within a foot or two I believe of a light source. There are others on here that grow under lights and have more exact information. Your location can also decide whether you would need more time as well. Hopefully one of them will be on soon, in the meantime check the papers written by people here. You may find one on this very subject.