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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1735
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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 Posted: 10/14/06, 10:11 PM Post subject: Focus that |
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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
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Best Regards Chargerman
Great divergence calculator
http://www.pseudonomen.com/lasers/calculators/
Last edited by chargerman on 10/29/06, 12:25 PM; edited 2 times in total |
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tommygreen23
Wicked Lasers God
Joined: 05 Aug 2006
Posts: 1668
Location: proctor sucks.
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| Posted: 10/14/06, 10:22 PM Post subject: |
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sweet jesus!
i cant even pop a balloon at 6 feet! let alone light a match!
how exactly do i do the foil trick? and i use aluminum foil?
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E=Mc2
Fusion Laser
Joined: 24 May 2006
Posts: 323
Location: Austin, TX
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| Posted: 10/14/06, 11:15 PM Post subject: |
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Yo Chargerman!!! Very cool indeed. I learned this after getting my first laser 100mW Pulsar. When mine was warm from holding it the spot was way out of collimation. So I used a small jewlers screw driver and inserted into the aperature and rotated the focusing lens. Yeah thats right I can do it without removing the end cap! I have not tried what you did though, I just focused mine to infinity so the spot was as tight as possible at great distances. Anyway that was a cool video. You have the 100mW right? I love those Pulsars.....very stable lasers.
-T-
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Phoenix & 100mW, & 150mW Pulsars
LASER: Light Amplification by the Stimulated Emission of Radiation
Speed of light: 186,282 miles per second!
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dorkultra
Fusion Laser
Joined: 28 Aug 2006
Posts: 282
Location: north royalton, oh
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| Posted: 10/14/06, 11:17 PM Post subject: |
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holy crap. i'm getting mine tested by pseudonomen137 to see if i'm getting anywhere near 150mw(which i doubt because i'm having trouble cutting electrical tape and never lit a match yet)
so, you took off the end cap, shoved a little foil in between the diode and case.
then you twisted the lense somehow to focus it?
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wicked classic 35mw in cni case
wicked Pulsar 150 in black case modded by pseudonomen137
Stop buying those crappy Ebay-sold Newwish lasers! |
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E=Mc2
Fusion Laser
Joined: 24 May 2006
Posts: 323
Location: Austin, TX
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| Posted: 10/14/06, 11:25 PM Post subject: |
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| dorkultra wrote: |
holy crap. i'm getting mine tested by pseudonomen137 to see if i'm getting anywhere near 150mw(which i doubt because i'm having trouble cutting electrical tape and never lit a match yet)
so, you took off the end cap, shoved a little foil in between the diode and case.
then you twisted the lense somehow to focus it? |
Yeah the diode housing has a black threadded lens mount that can be rotated to focus the laser. It is slottted for a screw driver, a wide one at that and can be accessed by removing the end cap. Just rotated it slightly to adjust focus.
-T-
_________________
Phoenix & 100mW, & 150mW Pulsars
LASER: Light Amplification by the Stimulated Emission of Radiation
Speed of light: 186,282 miles per second!
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1735
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/14/06, 11:41 PM Post subject: Re |
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Yup....what E=Mc2 said.....the lens will screw in, or out. I had to turn mine counter-clockwise(unscrew) about 3/4 turn at which point I could SEE the focal point. If your patient and look real close at the beam(a little smoke/contrast helps here) you can see that the focal point moves away from the laser and back towards the laser, as you screw the lens in and out. I set my focal point at about 6 1/2 feet. At 30 feet the dot is the size of a golfball, so it's no longer "Collimated".......but you can always put it back to normal collimation if you want to. I like it focused at 6 1/2 feet, if all is still......match's light instantly when bathed in the Pulsar's beam. Chargerman
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Best Regards Chargerman
Great divergence calculator
http://www.pseudonomen.com/lasers/calculators/ |
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Gadgeteer
Wicked Lasers God
Joined: 30 Jan 2006
Posts: 2304
Location: North Texas
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| Posted: 10/14/06, 11:54 PM Post subject: |
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yeah, we need to figure out the best way to make these quick focus on the fly. ain't checked the vid out yet man but have a good idea as to what you were getting at. dl'led and just gottta check it out.
focus is what we need to focus on. I do not have the lathe here setup to actually cut threads and I was thinking of something cheap and readily available for output lens adjustment and that would provide focus of the power to a dedicated target and be adjustable.
The "slip-fit" lens for the Fusion does not appear to be an option due the the far shorter Pulsar output lens focal length. I believe this would certainally call for threads for adjustment.
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http://gadgeteer.home.pipeline.com/laser/laser.htm
http://new.photos.yahoo.com/gadgeteer_x1/albums |
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tommygreen23
Wicked Lasers God
Joined: 05 Aug 2006
Posts: 1668
Location: proctor sucks.
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| Posted: 10/15/06, 12:04 AM Post subject: |
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| perhps a tube of some sort, that comes out the tip of the end, it would fit with a notch into the lens retaining piece and come out the end so you could turn it to focus easealy?
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pseudonomen137
Wicked Lasers God
Joined: 17 Mar 2006
Posts: 3680
Picture(s): 1
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| Posted: 10/15/06, 12:11 AM Post subject: |
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| Quick note to anyone attempting to change the focus knob: I have my pulsar's diode/driver board assembly here on my desk right now, and the black knob has some white solidified adhesive stuff on the sides that they apparently stuck on to lock the focus into place, so depending on how it was made, you might need to break that first before just stick a screwdriver in and adjust it
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1735
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/15/06, 12:17 AM Post subject: Re |
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Yea...mine had the white "Goop" too, I unscrewed my lens first(this broke the adhesive) then totally removed the lens assembly and carefully cleaned the threads with a sewing needle untill all the glue was gone. Now my lens screws in and out very easily. I used a tiny dab of modelers clay to "Set" the lens....holding it in place temporarily, so I can readjust at will. Chargerman
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Best Regards Chargerman
Great divergence calculator
http://www.pseudonomen.com/lasers/calculators/ |
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1735
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/15/06, 1:52 AM Post subject: Focusable |
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O.K.....heres what I did. First I removed the end cap and reamed out the output hole. Then, I removed the lens assembly and thoughly cleaned all the adhesive from the threads, so my lens assembly screws in and out freely. On my Pulsar the apreture cap is shapped like the drawing. #2 is a smooth shoulder that press fits into the housing. I sanded this shoulder with a small file untill the cap spins freely in the housing....no more press fit, then applied a tiny dab of slick-em so it spins free and smooth in the housing. Then, I glued an appropriate spacer washer onto the threaded section #3 to mate my cap with my lens assembly. Next, I set my lens at as near perfect a collimation as I could get and smashed wee bits of modelers clay between the lens and the housing to act as a dampener. Then, I used permatex ultra black rtv silicon to secure the threaded portion of the end cap to the lens assembly itself. Be very careful when doing this as to not sqeeze any silicon onto your lens itself, just enough rtv to glue the threaded portion of the cap, to the outer plastic ring of the lens assembly, let this stuff dry completely. Next, I scribed a line on the cap corrisponding with a "C" I scribed on the housing, to show me where my perfect collimation is. Next....I adjusted and recorded 2 foot focus intervals with small scribe marks around the circumfrence of the housing......Viola Fully focusable Pulsar  The modelers clay gives it a nice creamy smooth feel when you turn it, as well as making it nice and stiff. And to go from totally collimated to focused way far away and back, only takes about 1/2 to 3/4 revolution of the end cap, with the end cap fully seated, the laser is in the "Collimated" position. Now my Pulsar is truely Wicked Best Regards Chargerman
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Best Regards Chargerman
Great divergence calculator
http://www.pseudonomen.com/lasers/calculators/
Last edited by chargerman on 10/29/06, 1:54 PM; edited 4 times in total |
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dorkultra
Fusion Laser
Joined: 28 Aug 2006
Posts: 282
Location: north royalton, oh
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| Posted: 10/15/06, 2:58 AM Post subject: |
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chargerman, doesn't your endcap just fall out? how does it stay in there?
_________________
wicked classic 35mw in cni case
wicked Pulsar 150 in black case modded by pseudonomen137
Stop buying those crappy Ebay-sold Newwish lasers! |
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1735
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/15/06, 9:56 AM Post subject: re |
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Hey Dorkultra,
The end cap is glued to the lens assembly! The lens assembly is threaded into the housing! Chargerman
_________________
Best Regards Chargerman
Great divergence calculator
http://www.pseudonomen.com/lasers/calculators/ |
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apex007
25mW Classic Wicked Laser
Joined: 06 Oct 2006
Posts: 35
Location: Philadelphia suburbs
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| Posted: 10/16/06, 7:50 PM Post subject: |
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| Chargerman, That's a pretty brilliant solution for making the Pulsar adjustable without changing its appearance much. Good job!
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chargerman
Wicked Lasers God
Joined: 08 Sep 2005
Posts: 1735
Movie(s): 2
Location: Big Horn Mountains, Wyoming
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| Posted: 10/16/06, 8:20 PM Post subject: Re |
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Thanks a Heap Apex
I thought it was a hellava good idea  Aparently we are the only ones that think so  And......it was actually quite simple to do. The most tedious task(and it wasn't much) was to chuck the endcap in a drill straight enough to use a small file to "Machine" the smooth shoulder down ever so slightly, so it would spin freely in the housing. Then......just set the output lens for best collimation, fab up a small washer to take up any clearence between the cap and lens assembly (if your peticular unit needs it), and glue it all together. Focus' by unscrewing the cap Freaking works great As stated in my last post......I even put tiny scribe marks on the housing that corilate with a tiny scribe mark on the endcap.......I can precision focus with a very small twist of the endcap Last night, I was amazing my friends and family by lighting blackened matchs from almost 12 feet No additional lens' required........set focus where you want it....and hold really, really still The hardest part is actually hitting a matchead at that distance. I know it will do even better too, because the house was full of people smoking ciggs, so much so that the beam from my Pulsar was faintly visible to all. Give it a try Apex.....it works AWESOME Best Regards Chargerman
_________________
Best Regards Chargerman
Great divergence calculator
http://www.pseudonomen.com/lasers/calculators/
Last edited by chargerman on 10/29/06, 1:55 PM; edited 1 time in total |
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