Blu-ray laser pointer

[apex007]

Alex, don't leave us hanging, please post a review!

And congratulations on your new laser!

 

[wickedALEX]

Yes in 1-3 days i will post it.

 

[toked323]

i think that is a good deal for a laser, professionaly made in a CNI like case

 

[wickedALEX]

is 3-4mm dot sise @ 10m= 0,4mRad-0,3mRad?

 

[antaean3000]

Hi, I have just bought a very cool blu-ray laser form ebay (

Has any ather also this laser? If yes, is it good?
I will make an review wenn it arrives.

I brought one from there as well i got the 10mw blue laser for £100

 

[IgorT]

is 3-4mm dot sise @ 10m= 0,4mRad-0,3mRad?

To calculate the divergence, you need to know the diameter of the beam at the apperture, and the diameter of the beam at a certain distance.
The further away you measure, the better, because it will reduce the mistakes you make.

One data point is not enough.



4mm is great, it means it is well focused. The dot is hardly larger than the beam diameter. But it's a diode laser, and these are not as hard to focus as DPSS lasers.