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Yes I understand all that and the government has already done a study of this particular laser and all that data is available. This is a non-eye-safe laser. I have glasses for this particular wavelength.

Not to be snarky, but I have a solution already. My goal is to just show that it's safe i.e. use physics to show that I'm correct in my assumption.

From what I can tell, at very long distances even, the beam direction seems very unaffected by errors (even large ones) whereby the plane on the filter is not perfectly perpendicular to the beam axis. This seems to be a good simple solution for my application. Overall goal being to minimize...

Hey all, I have a class 3R laser. I am using it to project the line of fire (barrel axis) of a weapon. In order to get rid of all of the messy diffused light associated with the laser spot I have chosen to pass the beam through two orthogonal polarized pieces of film. This has drastically...