Page 8 of 16 FirstFirst ... 456789101112 ... LastLast
Results 71 to 80 of 156

Thread: Front surface mirrors are go

  1. #71
    Join Date
    Apr 2008
    Location
    Amsterdam, NL
    Posts
    2,098

    Default

    Hi Buffo, I agree with you thicker mirrors are better.

    But if they don't fit we have a problem.

    If I remember well the Scanpro/sonima and laserworld 50k have a 0,7mm slot in the galvo. this is a problem with 0,8 mirrors

  2. #72
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,489,446

    Smile

    If the slot is too thin, you *might* be able to widen it with a dremel wheel if you are *very* careful...

    Of course, thicker slots shouldn't be a problem, as the glue will hold the mirrors in place no matter what.

    Adam

  3. #73
    Join Date
    Jun 2010
    Location
    Australia
    Posts
    3,734

    Default

    Hi Buffo, an interesting post.

    I then question why Dragon Tech rate the DT's at different max scan rates based on the mirror size.

    It makes sense however, when you state the mirror weight as inconsequential. Perhaps the surface area comes in to play (air resistance)?
    This space for rent.

  4. #74
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,489,446

    Default

    It could be that the larger mirrors resonate more, which is why they need to be run slower (to limit the resonance). I'm just guessing though.

    If you've ever seen a set do this, you'll know it immediately. The images look all wiggly - almost blurry - and its *everywhere* in the scanned image.

    Now that I think about it though, if you had a set of DT-40's with the wider mirrors, it might be interesting to add some epoxy to the back and see if you could run them faster afterward...

    Adam

  5. #75
    Join Date
    Feb 2007
    Location
    Herts, UK
    Posts
    1,254

    Default

    The big mirror DT's (well, the ones I have here) use .8mm thick mirrors which is only slightly smaller than the CT ones I measured the other day when looking at this, and I think being quite thick it's likely they will not need epoxy to stiffen them.
    The 7mm mirror DT's perform really well actually and looked pretty much identical to the smaller mirror brothers with ILDA test patterns at narrow angles. The only time you ever notce the difference with them side by side a smaller mirror set is the slightly reduced performance at fast and wide scans, but you do have to be looking.
    My guess for the slightly lower performance spec is because the galvo coil protection has a tendancy to kick in on the big mirror versions when wide scanning and the tuning wound up too far.

  6. #76
    Join Date
    Oct 2010
    Location
    Athens, Greece
    Posts
    1,930

    Default

    hello mr p1t8ull

    can i change my order from 7pc 10x10 to 9pc 10x10 and 2pc 10x20 ??

  7. #77
    Join Date
    Jun 2010
    Location
    Zweibrücken, Germany
    Posts
    605

    Default

    Simon,

    can you please add 8 of the 10 x 20 to my order, give me an ok and I'll PP you the dif. of 41,6.

    Thanks, last change, promise!

    Cheers.

    Ah, what's next, a GB for low loss projector windows, or RGB dicros sets maybe?

  8. #78
    Join Date
    Oct 2010
    Location
    Athens, Greece
    Posts
    1,930

    Default

    i think he is working on a waveplate

    but the window you mention does look like a very very good idea (and easier than what he has done so far)

  9. #79
    Join Date
    Feb 2009
    Location
    Germany, near by Koblenz
    Posts
    6

    Default

    Hi Mr. Mirror! :-)

    I want to order some sets:

    Steering mirrors:
    2 -> 10x10x2mm: £4.40 GBP each
    2 -> 10x20x2mm: £5.20 GBP each

    Galvo mirrors:
    2 pair -> 6x11x.7mm: £8.00 GBP per pair

    So it is 35,20£

    How can i pay?

    Best regards
    Thomas

  10. #80
    Join Date
    Dec 2008
    Location
    Southport, UK
    Posts
    2,746

    Default

    Sorry I missed the updates to this thread

    Please add 2 sets of 7 x 12 galvo table tennis bat mirros to my order please.
    http://img62.imageshack.us/img62/3985/laser.gif

    Doc's website

    The Health and Safety Act 1971

    Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.





Posting Permissions

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