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  • araugh's Avatar
    Today, 05:55
    Post some videos of your latest work. I'd love to learn where the threshold is for what is truly art.
    27 replies | 837 view(s)
  • Lumia's Avatar
    Today, 05:40
    Hello All, As the title says "This is a Once in a Lifetime Opportunity" - Dave Sieg is a piece of living history as it pertains to vector graphics and analog imagery. Please make him feel welcomed into our group :) ALSO IMPORTANT: Feel free to show him what we have done to preserve this...
    4 replies | 95 view(s)
  • laserist's Avatar
    Today, 05:20
    There are two kinds of fool. One says, “This is old, therefore it is good.” The other says, “This is new, therefore it is better.” - Dean Inge When you pick up a guitar for the first time and you play around with it - everybody knows you can't play. Laser stuff is pretty much innately pretty -...
    27 replies | 837 view(s)
  • clickamouse's Avatar
    Today, 04:32
    clickamouse replied to a thread Combining beams in The Lounge
    Whoa, where does one find multi-emitters like that? Wavelength? Never saw those before. Thanks for posting! ...Mike
    8 replies | 191 view(s)
  • HankLloydRight's Avatar
    Today, 04:24
    Same here. Been doing yoga once or twice a week for about a year now. This should be interesting!
    4 replies | 95 view(s)
  • buffo's Avatar
    Today, 04:02
    So based on two shows you didn't personally care for, you jump to the conclusion that ILDA is the worst thing that ever happened to laser shows? How does that follow? Do you honestly believe that those two lumia shows represent the entire body of laser show artwork? I think what you meant to...
    27 replies | 837 view(s)
  • VDX's Avatar
    Today, 03:54
    VDX replied to a thread Combining beams in The Lounge
    ... I have a good sample for "knife-edging" multiple diodes into one beam with a distributed diode array. The 7 diodes with 5 emitters each are first collimated into a horizontal "line" ... then this "line-beams" are slightly "tilted" the same amount by the 45°-mirrors ... and "stacked" onto the...
    8 replies | 191 view(s)
  • buffo's Avatar
    Today, 03:37
    buffo replied to a thread Combining beams in The Lounge
    This isn't going to work for knife-edge stacking of multiple diodes of the same color on each input face because you can't mount the diodes close enough together in a block. You will still have to use a knife-edge mirror on the output. True, it reduces the number of knife edge mirrors by half,...
    8 replies | 191 view(s)
  • edison's Avatar
    Today, 02:54
    edison started a thread SELLING : Selling 6W red modules in Buy/Sell/Trade
    Hello guys , we are selling some red modules , all info can be find here: https://www.facebook.com/groups/photonlexicon/ Feel free to contact me by PM. Thanks for looking!
    0 replies | 23 view(s)
  • JohnYayas's Avatar
    Today, 02:03
    Yea, that is pretty cool that there is yoga.
    4 replies | 95 view(s)
  • bas123's Avatar
    Today, 01:30
    bas123 replied to a thread /crayonano.com/ in The Lounge
    Do they really have a product coming to market? From what I see on their website, they are trying to make this work since 2015, with little information about any progress... Would be great if they managed to pull it off!
    1 replies | 220 view(s)
  • discothefunkyhippo's Avatar
    Yesterday, 22:09
    Stoked for yoga! Thanks Dustin!
    4 replies | 95 view(s)
  • laserist's Avatar
    Yesterday, 21:29
    Way back when, we (at laserium) shared with each other things that worked and didn’t work - at all. (because - well - there was this thing called an audience - way back when...) Pretty much, we all came to believe that strobing the audience was a bad f...ing thing to do, if you think it’s just...
    27 replies | 837 view(s)
  • absolom7691's Avatar
    Yesterday, 20:30
    I hate to feed the trolls and have yet another thread derailed by the "artist" formerly known as but... The tools don't make the artist. Any artist can use any tool. Some are dismal at it, others are amazing. I've seen sheet-metal art that dispels the hammer bit but it's hyperbole, I know. ...
    27 replies | 837 view(s)
  • laserist's Avatar
    Yesterday, 18:25
    Okay, can I just say that ILDA was the F...ing worst thing that ever happened to laser shows? If all you have is a hammer, everything looks like a nail. I’ve seen two different “lumia” “shows” here in the last two weeks where the “choreographer” thought strobing the lumia was a good idea....
    27 replies | 837 view(s)
  • Glrock's Avatar
    Yesterday, 17:29
    Whoops. Meant to say my flight is on Monday. Still can't make it. :(
    3 replies | 89 view(s)
  • Bradfo69's Avatar
    Yesterday, 17:18
    The class is Monday. You'd be fine.
    3 replies | 89 view(s)
  • swamidog's Avatar
    Yesterday, 15:12
    thank you! I'll talk to Andrew about the idea being able to bolt rack ears on it.
    27 replies | 837 view(s)
  • Glrock's Avatar
    Yesterday, 12:42
    Wish I could make it :( I'm flying back on Monday.
    3 replies | 89 view(s)
  • djeric68's Avatar
    Yesterday, 12:18
    Looks like a fun piece of gear. Just pledged my $. Any plans to make it 19" rack mount? The ILDA input sounds like a good idea too.
    27 replies | 837 view(s)
  • kecked's Avatar
    Yesterday, 11:32
    kecked replied to a thread Combining beams in The Lounge
    The cube acts as the knife edge mirrors. Yes you set up the beams so they are knife edged prior to the cube but they are just aligned in a metal housing without the mirror. The mirror is the center of the PBS cube. and yes each stacked side is P or S and yes rotated with a waveplate. The result...
    8 replies | 191 view(s)
  • dkumpula's Avatar
    Yesterday, 10:21
    Please find below the draft SELEM 13 Presentation Schedule and Auditorium Show Schedule. As always, we have another exciting year of talks and content to show. I'm continually amazed by the wide variety of interesting talks that attendees take the time to prepare. Thanks to all of you in...
    4 replies | 95 view(s)
  • buffo's Avatar
    Yesterday, 09:24
    buffo replied to a thread Combining beams in The Lounge
    No matter how you "stack" the input beams, you are still using the knife-edge mirror technique. You need the degrees of freedom to ensure the beams are parallel and as close as possible to one another. Adam
    8 replies | 191 view(s)
  • StonewolfStudios's Avatar
    Yesterday, 08:08
    I will be there for sure. I am going to try a XL shirt for me this year.
    127 replies | 7709 view(s)
  • kecked's Avatar
    Yesterday, 06:38
    kecked replied to a thread Combining beams in The Lounge
    Its pretty simple but easier to see if drawn. essentially you stack the beams into the cube, combine them and then dichro combine the result. Only advantage is less moving parts but much higher tolerance needed in machining to align beams to start. Once done though nothing should move. If you...
    8 replies | 191 view(s)
  • buffo's Avatar
    Yesterday, 06:21
    buffo replied to a thread Combining beams in The Lounge
    Common suggestion, with an equally common caveat that makes it a non-starter. Here's the point that most everyone forgets: The output beam from a PBS cube is randomly-polarized (assuming H and V polarized beams at the inputs). So now if you feed that randomly-polarized output beam into...
    8 replies | 191 view(s)
  • CountFunkula's Avatar
    Yesterday, 04:48
    I don't personally own any 3d printers because I just mooch off of the ones at work *retardo . That being said: Stratasys Objet Eden 360V; formlabs; and a tazbot for quick FDM jobs. A few years ago, I built a beam table where almost all of the optomechanics and adapter plates were 3d printed. Gave...
    23 replies | 815 view(s)
  • buffo's Avatar
    Yesterday, 03:53
    Hey everyone; A few people have expressed interest in attending the 1-day ILDA Laser Safety Officer class on Monday, August 12th after SELEM is over with. I have received confirmation from Patrick Murphy that we will have an instructor available to teach this class. However, we need a minimum...
    3 replies | 89 view(s)
  • dkumpula's Avatar
    Yesterday, 03:26
    dkumpula replied to a thread Combining beams in The Lounge
    I think I need to see a diagram regarding how you'd align three colors with a standard broad-spectrum polarized beam splitter/combiner cube. I also can't visualize how'd you'd stack without mirrors. Buffo combined RGB with a RGB combining prism from a video projector several years back but...
    8 replies | 191 view(s)
  • Lazerjock's Avatar
    Yesterday, 03:19
    Randy, Glad you are going to make it. Yes please bring your drones. We will be doing indoor & outdoor racing again this year. Anyone wanting to participate is welcome to join. The more the we can get in the air better. I call it racing, but it is more of an exhibition race to show off...
    127 replies | 7709 view(s)
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