Results 1 to 8 of 8

Thread: lasever 635nm red review

  1. #1
    Join Date
    Jul 2007
    Location
    west sussex uk
    Posts
    2,279

    Default lasever 635nm red review

    hi guys my first attempt at a mini review, please excuse pictures i only have camera on my phone and it does not like lasers.

    i decided to give up on my home made because of beam stabilty problems,
    i just dont have the tools to do the job properly.

    well after looking around for a red with good beam spec's, i found that they dont exist under $$$$$, so i went with lasever as they seem to have a good spec for a 635nm ,5x5 beam @ 1mrad, david was happy to answer any questions i asked.
    and after several email q&a's i brought a 250mw 635nm for 370 delivered.
    which is very good considering at the moment every one elses prices are going up big time, but lasever prices have stayed the same ,well a week later it turned up on my door, eager to play with it ,i opened it up its was very well packaged and each part was inside a anti static bag,
    put it all together and fired it up , from cold it has a soft start that winds up the power slowly until it's warmed up the first thing that struck me was the beam size at full power 5x8mm i emailed david he said its there ,
    theres a blur at the beam edge at full power . so i turned down the power a bit and there it was 5x5 as promised, power at full power was 304mw at start up but settled down to 294mw once warmed up , the beam does seem large when in use ,and measured at 5x8mm but most of the power is concentrated in the 5x5 area so you do get the stated power of 250mw in that 5x5 area there just seem's to be a wierd reflection thing going on at full power that gives you the impression of a big 5x8 beam .
    as for the divergence thats great it seem to match my green cni very well
    i measured it at 1.4 mrad which is a little more than stated but very good compaired to what else's about
    so i set it up in the projector fired it up then spent the next two days with a big grin on my face, i was well happy with what i was seeing
    the colours were amazing compared to my home made red
    took another power reading after the dichro and galvo mirrors and was getting 220mw which i am happy with, i dont think the dichro i am using is very good at 635nm . also i am using jian's big mirror dt40 pro's so i dont lose any beam off the galvo mirrors so all in all i am one very happy bunny
    and thanks to david wu for putting up with all my questions and sending me a very nice red laser
    Attached Thumbnails Attached Thumbnails DSC00410.JPG  

    DSC00412.JPG  

    DSC00422.JPG  

    DSC00427.JPG  

    DSC00432.JPG  

    DSC00433.JPG  

    DSC00434.JPG  

    DSC00436.JPG  

    DSC00439.JPG  

    DSC00441.JPG  

    DSC00444.JPG  

    DSC00445.JPG  

    Last edited by badger1666; 11-15-2008 at 01:55.

  2. #2
    Join Date
    Nov 2007
    Location
    Coming to a theatre near you!
    Posts
    521

    Default

    nice, that is one crispy image! nice tuning job!
    "TO DO IS TO BE" - Nietzsche
    "TO BE IS TO DO" - Kant
    "DO BE DO BE DO" - Sinatra

  3. #3
    Join Date
    Jan 2007
    Posts
    142

    Default images of the spot

    Thanks Chirs! for your review!
    I would like to add pictures of the spot.
    These pictures are at 20cm away from the aperture. They are of full power, less than 5% power lost by the measured dimensions.
    Attached Thumbnails Attached Thumbnails 20cm.jpg  

    20cm-x.jpg  

    20cm-y.jpg  

    Professional manufacturer for High Power DPSS and Diode Lasers.
    1~8W 638nm Red
    1~8W 520nm Green
    1~20W 445/465nm Blue
    3~10W RGB laser
    http://www.lasever.com/
    Email: sales@lasever.com

  4. #4
    Join Date
    Jan 2007
    Posts
    142

    Default images

    The following are from 1 meter. The "blur", which is the diffraction by the collimation lenses, is not taken into measurement. The power ratio of the diffraction is less than 5%.
    Attached Thumbnails Attached Thumbnails 2m-x.jpg  

    2m-y.jpg  

    Last edited by Lasever; 11-23-2008 at 21:57.
    Professional manufacturer for High Power DPSS and Diode Lasers.
    1~8W 638nm Red
    1~8W 520nm Green
    1~20W 445/465nm Blue
    3~10W RGB laser
    http://www.lasever.com/
    Email: sales@lasever.com

  5. #5
    Join Date
    Jan 2007
    Posts
    142

    Default images

    The pictures from 2 meters
    Attached Thumbnails Attached Thumbnails 3m-x.jpg  

    3m-y.jpg  

    Last edited by Lasever; 11-23-2008 at 21:58.
    Professional manufacturer for High Power DPSS and Diode Lasers.
    1~8W 638nm Red
    1~8W 520nm Green
    1~20W 445/465nm Blue
    3~10W RGB laser
    http://www.lasever.com/
    Email: sales@lasever.com

  6. #6
    Join Date
    Jan 2007
    Posts
    142

    Default images

    the pictures from 3 meters
    Attached Thumbnails Attached Thumbnails 4m-x.jpg  

    4m-y.jpg  

    Last edited by Lasever; 11-23-2008 at 21:59.
    Professional manufacturer for High Power DPSS and Diode Lasers.
    1~8W 638nm Red
    1~8W 520nm Green
    1~20W 445/465nm Blue
    3~10W RGB laser
    http://www.lasever.com/
    Email: sales@lasever.com

  7. #7
    Join Date
    Jan 2007
    Posts
    142

    Default images

    the pictures taken from 4 meters
    Last edited by Lasever; 11-23-2008 at 21:59.
    Professional manufacturer for High Power DPSS and Diode Lasers.
    1~8W 638nm Red
    1~8W 520nm Green
    1~20W 445/465nm Blue
    3~10W RGB laser
    http://www.lasever.com/
    Email: sales@lasever.com

  8. #8
    Join Date
    Jan 2007
    Posts
    142

    Default images

    the pictures from 5 meters
    Attached Thumbnails Attached Thumbnails 6m-x.jpg  

    6m-y.jpg  

    Last edited by Lasever; 11-23-2008 at 22:00.
    Professional manufacturer for High Power DPSS and Diode Lasers.
    1~8W 638nm Red
    1~8W 520nm Green
    1~20W 445/465nm Blue
    3~10W RGB laser
    http://www.lasever.com/
    Email: sales@lasever.com

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •