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Thread: My new >3W RGB projector

  1. #1
    Join Date
    May 2008
    Location
    Once it was called "Bel Paese" = ITALY
    Posts
    858

    Default My new >3W RGB projector

    Hi all guys!

    Finally I got the last module missing, so my last creature has born...




    Chars of new projector are:
    • Red: 900mW/642nm from Kvant (Martin *Pelosh*)
    • Blue: 1W/445nm (1.1W peak) from Kvant (Martin *Pelosh*.... once more!)
    • Green: 1.3W/532nm (1.31W peak) from Laserwave (Marc *Gottaluvlasers*)
    • Optics and mounts: Laserwave (Rob *Stanwax*)
    • Galvos: DT-40 (Marc *Gottaluvlasers*)
    I still have to measure the peak output power of Kvant red unit (wishing that my little power meter can be able to do....'cause its end range is 1050mW only), but I am absolutely sure its power is 900mW guaranted (I think at least around 930-950mW)
    Total output power should be around 2.5-2.6W (I calculate, in the worst case, 20% losses). White balance is good, maybe little greenish... anyway the white appears to be "snow-white" and It is very very bright.
    Case is alu 3mm (40x30x25cm) and alu baseplate is 6mm thickness. Weight should be around 12-13kg.

    Here I post some pics of new baby.
    I tried to take pictures when at work, but quality was a huge crap... (my camera is a real shit....). Sorry guys... I hope to find soon the right camera for to shoot good pictures...
    Anyway...
    Here I want to say my biggest "Thank You!" to *Pelosh*, *Gottaluvlasers* and *Stanwax* for their precious advices and services. They supported me wonderful way. Great guys they are!
    Thanks guys!

    Enjoy you and greetings from Italy (It's raining cats and dogs here!)
    Steve
    Attached Thumbnails Attached Thumbnails Kvant blue.JPG  

    from top view.JPG  

    front view1.JPG  

    Kvant red.JPG  

    LW green.JPG  

    my webpage
    http://stevemilani.jimdo.com
    Skype ID: stevemilani957

    my RGB analogue projectors:
    3.9 W (640/532/445) 30kpps
    2.6 W (655/532/450) 30kpps
    2.5 W (638/532/450) 30kpps
    0.7 W (test unit)(635/532/473) 18kpps

  2. #2
    Join Date
    Jun 2010
    Location
    Australia
    Posts
    3,730

    Default

    Looks tidy.

    Your optics plate looks like 5mm, are you sure that is thick enough to avoid movement and flex? How does the colour balance look? Needs more red from where I am sitting.

    Good job.

    This space for rent.

  3. #3
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,489,091

    Thumbs up

    That's a nice looking projector, Steve. Quite compact! How about some shots of it scanning?

    Adam

  4. #4
    Join Date
    Aug 2008
    Location
    UK
    Posts
    5,704

    Default

    Hi Steve,

    Very nice job there.

    Regarding the colour balance, you're in the green side of the spectrum slightly because you don't have enough red in my opinion.

    This is from Chroma so awaits the flaming but....

    You can't dial the green back without shifting into the blue spectrum.

    Dialing the blue back just shifts you towards the yellow end of the spectrum.

    The only way to pull away from the green side, is to increase the amount of red (or decrease both green and blue together in the right amounts to keep them in balance respective to each other). However, in my paper experiments, the amount of drop required on blue and green was so large as to substancially reduce the overall power.

    So I'm guessing the best way is either to live with the slightly green end of the spectrum or plan for more red!

    I too add to Adams call for scanning pics, please!

  5. #5
    Join Date
    May 2008
    Location
    Once it was called "Bel Paese" = ITALY
    Posts
    858

    Default

    I apologize... baseplate is 5mm thickness. sorry... I will test its firmness as soon as possible.

    I agree with all of you about white balance.
    It shuld be too green unbalanced.
    But I sincerely have to tell that, even if Chroma also says on the contrary, white appears very good, almost white-snow.

    Tonite I will try to take some pics by my old camera (It has a lot of pixels burned as I used it for lasers.....) I hope to obtain enough good to see pictures to be posted here.

    Greets
    my webpage
    http://stevemilani.jimdo.com
    Skype ID: stevemilani957

    my RGB analogue projectors:
    3.9 W (640/532/445) 30kpps
    2.6 W (655/532/450) 30kpps
    2.5 W (638/532/450) 30kpps
    0.7 W (test unit)(635/532/473) 18kpps

  6. #6
    Join Date
    Aug 2008
    Location
    Berkshire
    Posts
    661

    Default

    Good god Steve,
    How many projectors is that you have now

  7. #7
    Join Date
    Feb 2008
    Location
    East Sussex, England
    Posts
    5,242

    Default

    I think you could probabnly lose the heatsink on the top of the kvant (I think it is) unless the any of the diode holders are actually mounted directly to the lid. The amount of thermal transmission up the sides of the lid is going to be minimal compared to that which is dispersed through the base (imo)

  8. #8
    Join Date
    May 2008
    Location
    Once it was called "Bel Paese" = ITALY
    Posts
    858

    Default

    @ RGbee....
    Ha Ha...
    This is my projector number 5.... (n3 RGB; n1 RGY; n1 green).... and I still have a HeNe 632.8nm gas laser tube (82mW) fully working.

    Gosh! I could play a complete lasershow Pink Floyd style!!!
    (or I could sell one/two of them...)


    @Norty303...
    I put heatsink on the top of Kvant 1W blue just only for... safety matter.
    I tested module it without it for half an hour in CW way: module temperatute (on the top of enclosure) was about 40C (approximate hand measure...). I asked to Martin for advices and he answered me: "with heatsink would be better".... That's what heatsink is for.

    Greets!
    my webpage
    http://stevemilani.jimdo.com
    Skype ID: stevemilani957

    my RGB analogue projectors:
    3.9 W (640/532/445) 30kpps
    2.6 W (655/532/450) 30kpps
    2.5 W (638/532/450) 30kpps
    0.7 W (test unit)(635/532/473) 18kpps

  9. #9
    Join Date
    Aug 2008
    Location
    UK
    Posts
    5,704

    Default

    Quote Originally Posted by Steve Milani View Post
    Hi all guys!

    Finally I got the last module missing, so my last creature has born...

    White balance is good, maybe little greenish... anyway the white appears to be "snow-white" and It is very very bright.
    I was commenting on your observation above.

    Chroma still shows it as white just on the green side as you observed.

    This is the actual plot. It looks pretty balanced with the balance still in white albeit on the green side, pretty accurate I'd say:


    You can see the white area as a triangle in the window.


  10. #10
    Join Date
    Jun 2010
    Location
    Australia
    Posts
    3,730

    Default

    We need a "this thread is useless without beam shots" smilie!
    This space for rent.

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