One night a few weeks ago after shutting down my computer I could see a reflection of the lamp behind me. In the reflection I noticed a rainbow X extending out from the light bulb. I turned around and could still see the rainbow X on the wall. Of course I had to take a few shots. This is one of four shots I took and although I thought I took the shot straight on, after adjusting the shadow it is obvious I took it of the reflection and not of the lamp directly. This is the only shot with the glowing lines in the upper left corner and I am really confused as to what may have caused those lines, as I do not remember there being a similar reflection on the dark computer screen. There were no other lamps or lights on besides the one in the photo. The only thing I can think of is maybe I turned slightly causing light from the lamp to reflect through the prisms in my glasses just as I took this photo? Anyone have any ideas?