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Thread: Laserworld CL-RGB 2000

  1. #11
    Join Date
    Feb 2011
    Location
    Knutsford, UK
    Posts
    286

    Default

    Hi I've been looking at a pair of these for satellites & will be watching the results you get as I asked a question and wasn't sure about the response:

    Item: http://cgi.ebay.com/1W-445nm-laser-m...-/120711310127

    My question & sellers response:

    Hi, interested in a pair of these - coule you tell me what the beam correction optics are please?

    i.e. is it just a focus lens resulting in a 1x3mm stripe beam or is it a prism pair or cylindrical lens etc giving a round beam?

    Thanks,
    Adrian

    Response:

    Hi,

    As the beam has been focused and it is dot, so I do not think you need another lens to focus it.

    Regards
    Tony

  2. #12
    Join Date
    Aug 2008
    Location
    UK
    Posts
    5,704

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    I'm pretty sure Andy Con from this forum is building 445 modules.

  3. #13
    Join Date
    Oct 2007
    Location
    Netherlands
    Posts
    189

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    Quote Originally Posted by dilbert View Post
    Hi I've been looking at a pair of these for satellites & will be watching the results you get as I asked a question and wasn't sure about the response:

    /.../

    As the beam has been focused and it is dot, so I do not think you need another lens to focus it.

    Regards
    Tony
    hehehe were you really expecting more then a mere focussing lens in these modules?

  4. #14
    Join Date
    Feb 2011
    Location
    Knutsford, UK
    Posts
    286

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    Worth a try as I have a cheap QTX projector here which has what looks like a mini cylinder pair glued on the 445! Beam specs actually very good at distance but the module is very flimsy...

    I've already had a chat with Andy and will probably be getting him to make me a pair.

  5. #15
    Join Date
    Feb 2009
    Location
    Greenville, NC
    Posts
    1,161

    Default

    Just a word of warning!!!!
    Watch out for the bounce off the front glass!!!! I "had" a Revo 500RGB and the thing killed its self by the reflection off the front glass....
    Arc Flash the wonderbolt

  6. #16
    Join Date
    Jul 2010
    Location
    Netherlands
    Posts
    203

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    Quote Originally Posted by djmatt View Post
    Just a word of warning!!!!
    Watch out for the bounce off the front glass!!!! I "had" a Revo 500RGB and the thing killed its self by the reflection off the front glass....
    Yeah my laser also bounces of the glass and shines inward and sometimes against the laserhead....is this bad? and so...how can i correct this?

  7. #17
    Join Date
    Feb 2010
    Location
    Melbourne, Australia
    Posts
    1,106

    Default

    Quote Originally Posted by Lassie View Post
    Yeah my laser also bounces of the glass and shines inward and sometimes against the laserhead....is this bad? and so...how can i correct this?
    Get some Edmund Optics anti-reflective glass.

  8. #18
    Join Date
    Nov 2007
    Location
    SoCal / San Salvador / NY
    Posts
    4,018

    Thumbs up

    Hi there -

    Quote Originally Posted by Lassie View Post
    ...and so...how can i correct this?
    Quote Originally Posted by taggalucci View Post
    Get some Edmund Optics anti-reflective glass.
    Yep, called 'CDAR', found here: http://www.edmundoptics.com/products...ow=1&PageNum=1 - and another 'pro-tip' is mod your aperture 'window-frame', to build yourself a little 'shim', to angle the glass-back, about 2-5˚, ie:

    Click image for larger version. 

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    ...and make sure you make angled 'side-panels' for the frame, too, so you can still maintain a good 'seal' against dust / fog, etc... This-way, even the miniscule <1% reflection will *still* not make it-back thru your optical-train to your diodes and eliminate any annoying 'double-image' coming-back off the galvo-shafts, etc...

    Hope this helps....
    j
    ....and armed only with his trusty 21 Zorgawatt KTiOPO4...

  9. #19
    Join Date
    Oct 2009
    Location
    sweden
    Posts
    116

    Default

    no prism
    the text stated "Beam Diameter at aperture (mm):2.0±2" not true, it's more 2mmx6mm
    it only has a clamp and a lens
    i have not opened it but that's what i can see looking at the lens

    and i asked the seller if the beam diameter was smaller then 3mm,
    because i use the dt-40wide scanners and the maximum diameter
    they can be used with is 3mm
    he told me that the beam was smaller then 3mm

    and he promised me to send it so that i would have it before the 16th
    i was going to use it at gig today, but i got it today the 19th

    i think this was the first and last time that i buy from this seller

    now i have to find someone else that can sell me the red 1w and green 0.5w
    any suggestions?
    i'm not interested in buying expensive viasho lasers

    (btw this is my first solid but i have 2 hene 3 argons and one ar/kr
    gas is more fun




    Quote Originally Posted by dilbert View Post
    Hi I've been looking at a pair of these for satellites & will be watching the results you get as I asked a question and wasn't sure about the response:

    Item: http://cgi.ebay.com/1W-445nm-laser-m...-/120711310127

    My question & sellers response:

    Hi, interested in a pair of these - coule you tell me what the beam correction optics are please?

    i.e. is it just a focus lens resulting in a 1x3mm stripe beam or is it a prism pair or cylindrical lens etc giving a round beam?

    Thanks,
    Adrian

    Response:

    Hi,

    As the beam has been focused and it is dot, so I do not think you need another lens to focus it.

    Regards
    Tony

  10. #20
    Join Date
    Feb 2008
    Location
    East Sussex, England
    Posts
    5,248

    Default

    i'm not interested in buying expensive viasho lasers
    Viasho are actually very reasonably priced
    Frikkin Lasers
    http://www.frikkinlasers.co.uk

    You are using Bonetti's defense against me, ah?

    I thought it fitting, considering the rocky terrain.

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