Question for anyone with an interest in laser pointers.

[TheBigCheese]

Hi guys

I've got a set of laser pointers red, green and blue, whilst the red and green look great when projected on the wall the blue looks rather fuzzy.

Can anyone tell me if I've got a faulty pen or if blue pointers do just look fuzzier than the others?

Thanks!

 

[TheBigCheese]

...

...eh?

Don't you need a license for green and blue wavelengths?

No, there are no specific laws regarding laser pointers in the UK but anything greater than 5mW shouldn't be sold to the general public...the 50mW+ videos you see on the web worry me.

The very short wavelengths of blue light are much harder for the eye to focus on, so bright blue points often appear a little blurry. That could probably happen with a laser pointer, not sure, don't own any and never seen a blue one.

Or your laser is duff.

Thanks for the post grumpy, that's what I'm currently mulling over...have to do some research into it.