Green Beam Laser

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5mW Green Laser Pointer Silver Gold Night Visible Beam $24.80 Time Remaining: 7d 16h 24m Buy It Now for only: $24.80

Why does my 5mw green laser beam spread out?

I bought a 5mw green laser off ebay and when i shine it on things there is lots of dots around the original dot. I dont think theres dust in the lens cos i cant see any but i can see the lens moving about inside it i think

thats probable a light difraction, as laser is coherent, a scratch in the lens may cause that sort of effect