Focusing Lens

[danieldaniel]

Hello,
I have a red WL nano (100mW), and I want to buy a focusing lens for it.

Would something like Laser Collimating Lens 4 7mm Focus 6 0mm Diameter Aspherical Glass Lens | eBay work?

I just want to make the beam smaller, so it can pop balloons.

What lens would be best?

 

[AnnaColson]

I suggest you to have Canon EF 135mm f/2.8 lenses they are the best, you can't compare this with anyone else.

 

[danieldaniel]

I suggest you to have Canon EF 135mm f/2.8 lenses they are the best, you can't compare this with anyone else.

Isn't that a camera lens? I'm talking about a laser.

 

[BurningLaserGuy]

Can you disassemble the laser?

 

[danieldaniel]

You can disassemble the laser?

Nope, I was thinking about just putting it inside of the endcap.

 

[BurningLaserGuy]

You can just put the lens inside or outside of the endcap and remove it when you want to use it as a "pointer".

 

[hwang21]

Use a magnifying glass, much easier and cheaper

 

[danieldaniel]

Use a magnifying glass, much easier and cheaper

I tried doing it, but it just made the laser beam really big. (I put it in both ways)

 

[BurningLaserGuy]

@hwang21: Much cheaper but no easier: is very hard to find the optical center and keep it motionless...

 

[hwang21]

@daniel: move the laser closer to the target you are trying to burn, if that doesn't work then your magnifying glass isn't a magnifying glass

@burning: you could use a small magnifying glass, tape over the laser aperture or something

 

[BurningLaserGuy]

This I want to say: I personally used an eyepiece lens of 6mm taped over the endcap of my 15mW laser (which I think is a little stronger...).

 

[scumbagatheist]

Sell the damned thing to an unsuspecting noob, and buy yourself a decent 638 that's already focusable.

 

[danieldaniel]

Sell the damned thing to an unsuspecting noob, and buy yourself a decent 638 that's already focusable.

I'm going to get a 1W blue, I think.