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ArcticMyst Security by Avery

How to measure the divergence

Joined
Feb 4, 2008
Messages
25
Points
0
Hi everybody,

I want to measure the divergence on my look-alike deal-extreme green 30 mW laserpointer from laserbeam, a danish company.
Is the diameter only the brightest dot (on my laser the dot is 0,6 from 7 meters away) or is it also the slightly (and only slightly) darker outer ring? (here the dot is 1,2 cm from 7 meters away)
It makes a pretty big difference if the dot is 0,6 or 1,2 cm :)

Beforehand thanks

Wanjiru
 





murrat

0
Joined
Feb 25, 2008
Messages
388
Points
28
How you measure it? I mean the brightest dot? With naked eyes? :eek:
 
Joined
Feb 4, 2008
Messages
25
Points
0
Kk, then my look-alike deal-extreme laser should have a 0,9 mm divergence? That can´t be right. Can it?
 




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