Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

How can I make my laser beam more sharp ?

Joined
Oct 23, 2010
Messages
8
Points
0
Hello !

Just got my O-Like 405nm laser, and it's a little disappointing. I have iShow, and while displaying really basic shapes, I can tell that the laser beam has "width" - which means that the beam isn't sharp enough.
I also purchased from them a guarding glasses, and when I look at the beam with it it seems really nice and sharp.

Is it possible to make my laser beam more focused ?

Thank you .
 





Joined
Nov 7, 2008
Messages
5,725
Points
0
If the beam looks sharp through safety glasses that's all that matters when dealing with blu-ray lasers. The short violet wavelength makes the dot/beam difficult for your eyes to focus on, so it will usually appear "fuzzy" unless you look through goggles.
 
Last edited:
Joined
Oct 23, 2010
Messages
8
Points
0
ElektroFreak, I'm new to lasers so what you just said sounds logical ...
ELEktron, I meant for divergence, as the laser beam does look fuzzy list ElectroFream said ..

I had no idea this was the case.
What about blue lasers such as 445nm or 473nm ? The human eye has trouble focusing on that color in the dark as well ?
 
Joined
Nov 7, 2008
Messages
5,725
Points
0
ElektroFreak, I'm new to lasers so what you just said sounds logical ...
ELEktron, I meant for divergence, as the laser beam does look fuzzy list ElectroFream said ..

I had no idea this was the case.
What about blue lasers such as 445nm or 473nm ? The human eye has trouble focusing on that color in the dark as well ?


With 445nm the effect is still noticeable, but it's not as pronounced as it it is with 405nm.. 473nm is almost teal/turquoise, so the blurred effect is all but nonexistent.

The same effect is noticeable when looking at a blacklight from a distance.. it's nearly impossible to focus your eyes on the source.
 




Top