Exteral Lenes

[Sniper]

[quote author=SenKat link=1170183197/0#14 date=1170291487]Wouldn't it be great if someone invented an infinite diverger lense ?  You could burn at any distance then.....Mmmmmmmmmmm  Toasty !

I've tried with a telephoto lens but the beam seams to lose it's power along the way. The only way is to mod the pulsar like Tommygreen23 & Chargeman did...
[/quote]

Yea i would sure love to have a never ending power in my handS!!!

 

[laser]

yes it would be, nice, but you still wouldnt be able to burn stuff from really far away, the power would start to diminish, right?

 

[SenKat]

In reality, yes. Fantasy ? Well - yeah, it could happen !

 

[timelord]

In reality, yes.  Fantasy ?  Well - yeah, it could happen !  

I'll book the battery powered pensioner carts for me and you by the time us mortals are allowed this stuff ;D

 

[SenKat]

HAHAHAHA ! VERY good ! I expected to be living next door to George Jetson by now when I was a kid ! *sigh*

 

[timelord]

HAHAHAHA !  VERY good !  I expected to be living next door to George Jetson by now when I was a kid !  *sigh*

[smiley=lolk.gif]

 

[timelord]

Here's my lens on my pulsar..

 

[troyboy]

After seeing this thread I just bought a disposable and I'm gonna take it apart for the lense soon.

I don't know if this will help or anything but heres a small pic I found of some lenses

 

[SenKat]

Here MAY be a good place to get a lense for greater focusing : http://www.optics-online.com/ach.asp

 

[laser]

those are a bit expensive... but i wonder if they work well for lasers.

 

[stevetexas]

I have used optics online a few times (see SenKat's link)  I bought some 12.5 mm IR filters  (IRC21 and IRC30)  and just got some 6.3 mm plano-convex lenses today.

 I modded my 50 mW from SNOCTONY on e-bay by removing the scratched lens and replacing the whole collomation unit with a couple of washers, springs and a planoconvex lens I took from a $5 red pointer.  It has a pinpoint beam up to 6" and then diverges at probably 3-5 degrees to give a 10-15 foot beam diameter at 100 yards.  (the beam is MUCH wider and more obvious at night!!!) I like it that way.
Just be careful which direction you place the lens in - flipping it around will have an "opposite" effect.

 The laser smokes tape very quickly and maxes out my meter (over 70 mW) even with the aftermarket filter in place.  

 

[SenKat]

Snap a pic of that setup.....(please ?)

 

[stevetexas]

I am having camera trouble. I can get a picture of the beam and the spot and the pointer tonight, but small details fail my camera. I am looking for a good CHEAP camera for closeup shots so I can post stuff like this...

Basically I removed the collomating lenses, put a washer over the crystal (there is a little "ledge" inside the body about 5 mm above the crystal) atop that I placed a 1 cm spring and another washer then the lens and then the optics cap. I'll try switching out the lens with some of the new ones tonight and see which one I like best...

 

[stevetexas]

Here are a few pics of the laser I mentioned earlier. Also some of the inner workings. I have a video of burning matches but don't know how to upload it...

 

[stevetexas]

Can I post more than one picture at a time?  
Here's the spot at 20 feet

 

[stevetexas]

here's the beam at the laser head