I am struggling on one concept that I cant find when doing a thorough search. System: You have a projector (known to project real images onto a screen). The projector expands light with a lens, the light propagates to a flat mirror on a wall and reflects onto a screen. Conclusion: Although the image may appear distorted, it is real. It originated from a point and expanded before reflecting onto a screen. So, if that conclusion is right, then how is it that a flat mirror can be used a system that produces a real image when every definition basically says "no flat mirrors in a real image system"? If the conclusion is wrong and in the system here the image is now virtual, then should I conclude that anything reflected off a flat mirror is virtual? Also, does this mean that a laser shining on a screen is real but a laser shining off a flat mirror on a screen is virtual (same concept, but just double checking)?