How to focus BR for best divergence?

freshert · May 11, 2008

Hi,
The title says it all. How do i focus a Blu-Ray™ laser for the best divergence?
Thanks!

chido · May 11, 2008

Just focus it at a far away wall to the smallest spot you can, you can also take it outside at night and stare at the beam, then focus it to where you see the entire beam stays tight through the air.

Murudai · May 11, 2008

Focus for the best divergence...

Uh... keep screwing around with the collimating lens until it looks like a tight beam... ?

rog8811 · May 11, 2008

I have a small front surface mirror set on a fence around 20 feet from my workshop door. I clamp up the blue-aray so that the reflection comes back next to me....easy peasy

Regards rog8811
An n'th of a turn of the lens makes a lot of difference.....

freshert · May 11, 2008

ok thanks for the info. ill try putting a mirror somewhere in my house and use its reflection;D

freshert · May 11, 2008

chido said:
Just focus it at a far away wall to the smallest spot you can, you can also take it outside at night and stare at the beam, then focus it to where you see the entire beam stays tight through the air.

i can barely see the beam on mine... :-[ i also see grey around the dot when i point it at my garage door (faded red colour) at night. is this normal?

Switch · May 11, 2008

Use a surface mirror if you can.A regular mirror will screw up your dot.

freshert · May 11, 2008

Switch said:
Use a surface mirror if you can.A regular mirror will screw up your dot.

thanks for the tip

How to focus BR for best divergence?

freshert

0

chido

0

Murudai

0

rog8811

0

freshert

0

freshert

0

Switch

0

freshert

0

Online statistics

Forum statistics

Share this page