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Thread: WTB: Combine 642/660nm Dichro

  1. #1
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    Default WTB: Combine 642/660nm Dichro

    anyone have one of these from the group buy?

    I would really like to get one before SELEM

    PM me if you've got one you wouldn't mind parting with

  2. #2
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    Sorry, can't sell you one as it's being used in my projector .

    However, just a 'heads up' that you *really* need to be super accurate when aligning the dichro. Half a degree or so in either direction is enough to introduce huge losses. Hit the 'sweet spot' though and everything's hunky dory.

    I reckon there must be quite a few of these knocking about that never made it into projectors. However, I have to say that I think the combination of 642/660 is stunning and certainly adds something to the colour gamut.

    Cheers

    Jem
    Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.... Douglas Adams 1952 - 2001

  3. #3
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    yep I have read the horror stories, but I've got a lot of 660 and 642 that are begging to be combined before SELEM... someone must have one of these kicking around?

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    Quote Originally Posted by flecom View Post
    yep I have read the horror stories, but I've got a lot of 660 and 642 that are begging to be combined before SELEM... someone must have one of these kicking around?
    Don;t most people do it with a PBS?

    John
    leading in trailing technology

  5. #5
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    Quote Originally Posted by polishedball View Post
    Don;t most people do it with a PBS?

    John
    thats great if your combining two single diodes... my 642 and my 660 are already cross-polarized so PBS wont work

    I've got two leads... lets see...

    if not I am going to have to suck it up and order one from Semrock (ouch!)
    Last edited by flecom; 07-27-2010 at 18:32.

  6. #6
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    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    Quote Originally Posted by flecom View Post
    thats great if your combining two single diodes... my 642 and my 660 are already cross-polarized so PBS wont work

    I've got two leads... lets see...

    if not I am going to have to suck it up and order one from Semrock (ouch!)

    I have one, I can possibly part with...whats in it for me?

    Steve
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  7. #7
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    I have one too.

    olivier

  8. #8
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    I think I might have sourced one... I will check back in if not...

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