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Thread: laserscope

  1. #1
    Join Date
    Dec 2006
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    Default laserscope

    they dont blank?

    so how do you do a beam show if it does not blank? and u need to use scanners? again how do u do a beam show without scanners?

    im lost



    They dont blank. if you want to blank them you need to do it with a scanner and corner mirror setup - externally.
    They are for doing BIG beams outdoors - something that will be seen for miles - you can scan them with big mirrors and slow scanners as the beam is pulsed (the action of the Q-switch) but even though its at a fairly high repetition rate the scanrate is limited.

    I sit me or have we hijacked this thread

    Rob
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    Eat Sleep Lase Repeat

  2. #2
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    Default

    Like I said the laser does not blank in the lasershow sense of the word. You blank them like you used to have to do with gassers before the advent of PCAOMs using a scanner with a retroreflector. You can do it with a scanner and flag but retroreflector is the fastest way to do it mechanically. However as I said the beam is pulsed so if you scan too fast you get a dotted line - so scan speed is limited. You dont use a laser like this for animations - they are big beam machines - big BIG beams.

    Rob
    If you need to ask the question 'whats so good about a laser' - you won't understand the answer.
    -----------------------------------------------------------------------------------------------
    Laserists do it by the nanometre.

    Stanwax Laser is a Corporate Member of Ilda

    Stanwax Laser main distributor of First Contact in UK - like us on Facebook http://www.facebook.com/FirstContactPolymerCleaner
    www.photoniccleaning.co.uk

  3. #3
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    Default

    You can blank with the q-switch in a laserscope. You will not get 100% depth of modulation and your rep rate will be slower. As stanwax said this is not an animation laser but you can "chop" the laser. Many of us have successfully blanked laserscopes.

    Warning: blanking with a q-switch can and will destroy your KTP if you do not employ properly callibrated first pulse suppression. For example if you see my thread on my Cobra YAG i encorporated q-switch blanking as a standard in my system. It can be done (if you know what you are doing) It is called trial & error...lots of error.

  4. #4
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    Default

    Thnaks for the input Pat - I was hoping you might see this

    Rob
    If you need to ask the question 'whats so good about a laser' - you won't understand the answer.
    -----------------------------------------------------------------------------------------------
    Laserists do it by the nanometre.

    Stanwax Laser is a Corporate Member of Ilda

    Stanwax Laser main distributor of First Contact in UK - like us on Facebook http://www.facebook.com/FirstContactPolymerCleaner
    www.photoniccleaning.co.uk

  5. #5
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    Default

    i was thinking more for writing on the clouds.

    but if its not possible its not possible
    Eat Sleep Lase Repeat

  6. #6
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    Default

    yes you can do that but only short words

    Rob
    If you need to ask the question 'whats so good about a laser' - you won't understand the answer.
    -----------------------------------------------------------------------------------------------
    Laserists do it by the nanometre.

    Stanwax Laser is a Corporate Member of Ilda

    Stanwax Laser main distributor of First Contact in UK - like us on Facebook http://www.facebook.com/FirstContactPolymerCleaner
    www.photoniccleaning.co.uk

  7. #7
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    Default

    like "HI"

    LOL
    Eat Sleep Lase Repeat

  8. #8
    Join Date
    Feb 2007
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    Herts, UK
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    Default

    I recall seeing somewhere you can overlay frames at different scan rates to help "smudge" the unwanted QS blanking effect.

    What's the % likelyhood of this beastie being there in December then Rob?

  9. #9
    Join Date
    Nov 2007
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    Bend Oregon USA
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    Default

    Damn its only been 16 years but here is what I got.

    Crystal technology driver with First Pulse Suppression Card.

    Pin 1-external pulse polarity- Default=Open=positive pulse input - short/ground=negative pulse input
    Pin 2-external pulse input-ttl/cmos external pulse inputs (pulse width must be less than 10 usecs)
    Pin 3-Pulse suppression-default=open=active - short/ground=inactive
    Pin 4-ext/int mode control - default=open=ext prf input - short/gnd=int prf
    Pin 5-+5vdc -low current supply for external logic and int prf select lines
    Pin 6,7,8-INT PRF select lines- default=GROUND - +5v=activated
    Pin 9-Interlock Inhibit-Inhibits LO RF interlock only - Required for non-qs operation such as slow direct digital RF modulation
    Pin 10- Direct Modulation Input - (LO RF interlock inhibit required) Default=open/HIGH=RF ON=LASER OFF - Low/Gnd=RF OFF= Laser On
    Pin 11-Ground
    Pin 12-QS Thermostat-normal=nc - open=qs overtemp (shuts RF OFF)
    Pin 13, 15- Fault Summary Relay - normal=NC Closes for any fault
    Pin 14- LOW RF CW- Default GND/low=normal RF level - DEFAULT High(+5)=reduced RF for QS alignment
    Pin 16- Carrier Freq
    Pin 17- Fault Reset-default=open/high
    Pin 18-KEY- reset=low/ground(momentary)
    Pin 19 & 20- Ground

    Permanant connections
    Pin 1-open
    Pin 2-gnd
    Pin 3-open
    pin 9-jumpered to pin 10

    Pulse mode for beam work
    Pin 4-low ground
    Pins 9 & 10- open/high (+5v)

    CW mode for graphics or vector images
    Pin 4- Low (ground)
    Pins 9&10- LOW(ground)

    Blanking for both pulsed and cw modes
    Pin 4-HIGH (+5v)
    Pins 9&10-High (+5v)

    Any additional information will be available at my normal billing rate of $3240.00 per hour

  10. #10
    Join Date
    Nov 2007
    Location
    SoCal / San Salvador / NY
    Posts
    4,019

    Cool

    Hey Andy -

    Quote Originally Posted by andy_con View Post
    i was thinking more for writing on the clouds.
    but if its not possible its not possible
    Anything is possible...

    http://www.youtube.com/watch?v=3bRUSP5YHXw

    http://www.youtube.com/watch?v=HBxRFek-qNs

    http://www.youtube.com/watch?v=o9Lp2I4RVBc

    Blanked Logo example#1

    Blanked Logo example #2

    ...too bad we can't post a movie clip - got another one of these with full-fledged BLANKED animation - sure, only 24K-ish, but good enough...

    peace..
    j
    ....and armed only with his trusty 21 Zorgawatt KTiOPO4...

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