A simple lens cover for the Omnistar L80 projector.
There is no way to get a lens cover on this projector, so it friction fits to the inside of the lens housing.
Just make sure you adjust your focus so the lens moves back in the housing, to allow the cover to slide in.
I also put a small arm on the side to help with removal. If for some reason you had trouble removing, this arm is longer than the distance to the top or left side, so you could then easily remove.
Thanks