Should you be worried if your orchid is getting enough light?
While orchids prefer bright light, they MUST be protected from direct sunlight. Any type of indirect sunlight will be best. So if your orchid is casting a shadow, then it would be best to pull it back away from the sun. This is best rule of thumb for Phalaenopsis and Lady Slippers.
Oh, and one more rule of thumb when it comes to light. Don't forget to set your clocks forward on March 12th for daylight savings time.
Orchid care Instructions