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Thanks for the reply, any chance you'd have some more information about this? Or could point me in the right direction? Thanks again.

So 'technically' then if 5mW is safe standard, and a grating diminishes the mW's, I could start with a more powerful laser if Im using a grating to create a shape? I guess it just then becomes a mathematical and technical question with many variables of how much a grating effects the beam, what...

Awesome thanks. Do you know if it comes with a lens kit for creating different shapes? Also do you know if adding diffracting lenses reduces the output of power in anyway? Just wondering if I started with a 5mW laser will it make it even weaker, or is it impossible to tell? Thanks again

Im looking for the best 5mW green laser I can buy, preferably one with lens kit to project lines, circles etc...? Also is there any possible way to make a thicker line then the usual thin line that a laser creates?

Does adding a HDG reduce the power of a laser? If so, if I wanted to project a shape but wanted to keep it safe <5mW could I increase the power of the laser because of the HDG?

Such awesome feedback thank you. I am going to look into the projectors idea I think that's a great suggestion. I'm unfortunately still not at liberty to reveal the project as I am part of a team and they have denied me doing so. What I was suggested to say is that it's a training/exercise...

These are all such helpful replies, thank you very much. Whilst I can't reveal the actual product idea perhaps a little more information could help you, help me. : ) This product would be designed for outdoor use, but is not hand held. It is more of a wall mounted device that would project down...

I'm looking for two helpful tips please. I'm currently looking at designing a new kids activity toy featuring lasers. So my questions... 1. What lasers will work during the day (and night)? 2. What level of laser is child safe/eye safe? I'd appreciate your help. Thank you.