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tommygreen23
Wicked Lasers God
Joined: 05 Aug 2006
Posts: 1668
Location: proctor sucks.
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 Posted: 10/21/06, 5:34 PM Post subject: |
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| ohh ok, so it wasnt really glue. that makes sense, wont mess up the lens, thanks! |
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1721
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/22/06, 11:50 AM Post subject: |
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Yea Tommy,
Permatex ultra black is a fiber impregnated silicon rubber product. Though as hella, and won't leave any nasty residue on the optics as it cures. Plus.....you can remove the bond, clean up and start over if need be. Chargerman
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Great divergence calculator 
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tommygreen23
Wicked Lasers God
Joined: 05 Aug 2006
Posts: 1668
Location: proctor sucks.
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| Posted: 10/22/06, 1:07 PM Post subject: |
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im useing shoe goo, which is pretty much exactly the same. i like useing it on scanners and stuff becasue of the fact that it dosnt leave white crap everywhere! it has toluene and petrelum distillate, which i tested on a 5mW lens, and even if it gets right on the plastic lens, you can just peel it right off.
i got it on the 5mW lens, not the pulsar 
im really happy with my pulsar now, sweet!! |
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1721
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/22/06, 1:12 PM Post subject: |
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Awesome Tommy Yep....gotta take into consideration that a lot of adhesives flash off a nasty residue as they cure. You have the 150mw Pulsar right? I have the older 100mw....I'll bet the 150 is freaking killer when focused. Chargerman
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tommygreen23
Wicked Lasers God
Joined: 05 Aug 2006
Posts: 1668
Location: proctor sucks.
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| Posted: 10/22/06, 1:16 PM Post subject: |
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yeah its the 150, and yeah its killer! i got it tuned at about 2 feet now, and last night i was sitting in the backyard lighting wicks of bottle rockets at will. i didnt even have to get out of my chair
next time i make flashpowder i can light it safely at about 20 feet  |
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1721
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/22/06, 1:22 PM Post subject: |
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Kick Azz Who knew the lil' ol' Pulsar had so much potential! I should have known a long time ago that 650mn "red" absorbs into dark colors so much better than 532nm "green"
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Gadgeteer
Wicked Lasers God
Joined: 30 Jan 2006
Posts: 2304
Location: North Texas
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| Posted: 10/29/06, 12:22 AM Post subject: |
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Well Dale, I did the focus mod finally.
I replaced the conductive ink with an 0.005" brass strip to hold the module secure and yet permit adjustment with a bit of force if required.
Lathed off the endcap like you mentioned, set the focus to a bit past infinity, then used 5 minute epoxy on the inside of the end cap (very sparingly) and slid it in place. My only complaint is that it is now more difficult to reach that side of the lens for cleaning and one of the reasons for holding off doing it.
One stupid thing I did not think of back when this thread was started and I knew about before, as you screw the lens out for close focus you will be again clipping the beam and limiting the power.
diode< |) >
( lens is the |) )
I just measured the output with weak alks at 120mw focused at infinity. Focused at 1" reduced the power to 90mw.
I forsee a new and larger lens in my future!! 
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tommygreen23
Wicked Lasers God
Joined: 05 Aug 2006
Posts: 1668
Location: proctor sucks.
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| Posted: 10/29/06, 11:16 AM Post subject: |
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| carve the hole in the back of the lens out bigger to fix that problem. i noticed how that happened too. i didnt measure when focused when i did but wehn i go back i definatly will. |
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1721
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/29/06, 11:42 AM Post subject: |
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Well I'll be a monkey's anus  Chargerman actually got a "sticky" Hey Gadg.....you will probably notice that the"Sweet Spot" degrades the further away from the aperture the focus gets. Can this be improved with a better/different lens? Interesting observation on the power output issue......why would that be? Is the focus up close so tiny that it's giving a somewhat inaccurate reading? Or.......probably lots of beam loss thru the collimating lens with it unscrewed so far? Best Regards Chargerman
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Gadgeteer
Wicked Lasers God
Joined: 30 Jan 2006
Posts: 2304
Location: North Texas
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| Posted: 10/29/06, 2:54 PM Post subject: |
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| tommygreen23 wrote: |
| carve the hole in the back of the lens out bigger to fix that problem. i noticed how that happened too. i didnt measure when focused when i did but wehn i go back i definatly will. |
Yeah, that was one of the second things I did and suggested in Apex's thread. Steph posted a pic of before and after trimming the input aperture. Mine is just like that on both lens assemblies (new and old).
Even then the lens is too small to capture all of the beam if it is adjusted for focus as close as one inch but the lens has to be pushed out really far to reach this focus.
NORMAL setting of being focused to infinity and even just across the room is not a problem.
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Sprtdude91
Elite Laser
Joined: 30 Oct 2006
Posts: 156
Location: Walled Lake, Michigan
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| Posted: 10/30/06, 8:55 PM Post subject: Re: Focus |
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| chargerman wrote: |
O.K. not another lame azz match light video......the point is, after reaming the arpeture cap out as Apex007 described, and the foil contact trick complements of Gadget, I noticed that the lens in my Pulsar 100mw can be adjusted.....Hence focused  Mine was very well collimated so I re-focused mine at 6 feet 5 inchs.... roughly. Yea.... all you brainiacs already know this....Gadget....Athoul....Stephanie....GLL........but we can't all be freaks of nature This is for the newcomers here, to show them that the red Pulsars are just as nasty as the greens of the same power output. My aim was a little shaky but hey.......Back off It's tough holding a tiny little dot on a matchhead from over 6 feet away Chargerman
 http://www.tctwest.net/~charger/6ft+%20Pulsar%20100mw.WMV
Edit: I have added these 2 videos to this post, further showing the Pulsars awesome potential. These videos are already here at the forum in other threads. I just added them here for convenience.
http://www.tctwest.net/~charger/Hocus%20Focus.WMV
http://www.tctwest.net/~charger/Mega%20Pulsar.WMV |
how are you widening and focusing it in the first video????? |
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1721
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/30/06, 9:06 PM Post subject: |
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Hey Sprtdude.....you have to read thru this thread I simply removed the end cap....and glued the "Lens" to the end cap With a few more small details......very simple to do....read up! This is a great modification to do to the Pulsars, and is very easy to do. And the end results are astounding Best Regards Chargerman
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Gadgeteer
Wicked Lasers God
Joined: 30 Jan 2006
Posts: 2304
Location: North Texas
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| Posted: 10/31/06, 3:46 AM Post subject: |
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| chargerman wrote: |
| Hey Gadg.....you will probably notice that the"Sweet Spot" degrades the further away from the aperture the focus gets. Can this be improved with a better/different lens? Interesting observation on the power output issue......why would that be? Is the focus up close so tiny that it's giving a somewhat inaccurate reading? Or.......probably lots of beam loss thru the collimating lens with it unscrewed so far? Best Regards Chargerman |
Sorry CM, I meant to address this within the reply to TG and dropped the ball.
Lasercommunity.com section there are two threads that I started, one regarding Fusion Super Collimator, and something else with changing the output lens. I would have to look it up. On the Fusion, I swapped out the 20mm focal length lens with a 30mm. This allows the beam to spread more so that more surface area of the lens is being used and as result, more of the light rays be focused back to a smaller spot. The "super collimator" replaces the 30mm lens with an approximate 80-85mm focal length lens (of course larger diameter to take in the beam spread) and that can make (does make) it possible to pop balloons across the shop here, easy 24'. The longer focal length the output lens, the smaller the spot size in the distance when properly focused within reason.
The sweet spot you asked about is due to this fact. Pulsars, my best estimated and measured guess is that they are around 6mm focal length. I need to measure the diameter but likely on the order of 5-6mm.
Increasing the focal length to say 8-10mm could be possible but the diameter of the lens would have to be increased as well to be able to take in all the light. A spacer would definately be required as the lens would have to be positioned further from the original lens position. That is the drawback other than also having the end diameter larger to fit the new lens.
Dominico's thread about using the telescope veiwfinder falls under the same situation and idea, expand the beam, and focus it back down in the distance. This is called "up-collimation" and we do it all the time on the big lasers.
I also detailed much of this information here:
http://www.lasercommunity.com/viewtopic.php?t=5165
Need more help with the idea or understanding the lemme know.
JD
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Gadgeteer
Wicked Lasers God
Joined: 30 Jan 2006
Posts: 2304
Location: North Texas
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| Posted: 11/01/06, 11:36 PM Post subject: NEWS FLASH |
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Forget the little kid's 180mw...
Out of curiosity I picked up a pack of Energizer Titainium and a pack of Duracell Power PIX for comparision.
The Titainiums measured 1.6V and the PIX measured 1.7V
Power readings with the lens completly removed:
Titainium = 200mW
PIX = 220mW !!!! And the diode has survived!! (so far)
lens back in place:
150mw Titainium
170mw PIX
Time to change the lens 
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leukoplast
Wicked Lasers God
Joined: 05 Dec 2006
Posts: 2272
Picture(s): 12
Location: California
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| Posted: 12/27/06, 1:27 PM Post subject: |
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Does anybody have any pics of what this stuff looks like?
I am kinda confused on the whole thing.
_________________
125mW Fusion - Divergence- 1.0 mRad | TEM00-TEM01* Doughnut mode | 119mW peak, 103 Nominal
55mW CNI - Laserchecked at 65mw peak, 55mw nominal | Divg -2.18 mRad |MIA! Lost!! FOUND!
15mW Evolution - 100mW Peak, 85mW Nominal(Holds +/- 5% over 2min) | Divg 1.0mRad
Has semi-adjustable power setting by tweaking battery cap: <5mW - Peak power.
Chromed P125 Pulsar - 152mW peak, 135mW nominal:
- Divg - Rechecked, and refocused. Now at 0.05mRad...Yes, 0.05!! 5.08mm at 73 feet: 4mm at app
400 Watt Fogger - Great fogger! Pumps out a lot! Fills room easily.
Listen to one of my songs - |Space Continuum.mp3| |Site| |Liquefied Light.mp3|
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