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Thread: my new compact rgb build

  1. 01-28-2010, 15:18 #51
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    Is a Sky light filter the same as a polarizing filter ?
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  2. 01-29-2010, 04:05 #52
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    Quote Originally Posted by hobbybob View Post
    Is a Sky light filter the same as a polarizing filter ?
    Absolutely not, do not use a polarising filter!

    Also; a skylight filter has a pink hue to reduce blueness, I would personally go for a UV filter.
    http://img62.imageshack.us/img62/3985/laser.gif

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  3. 01-29-2010, 16:23 #53
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    Quote Originally Posted by Doc View Post
    Absolutely not, do not use a polarising filter!

    Also; a skylight filter has a pink hue to reduce blueness, I would personally go for a UV filter.
    I found this on my travels...

    B+W UV looks like the one to have... but £30... Shabba
    - There is no such word as "can't" -
    - 60% of the time it works every time -
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  4. 01-30-2010, 02:25 #54
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    i dont think i will bother fitting one then i did not know if i used one i would lose another 10% of projector power ,i already lose over 200mw from the crappy laserwave dichro's ,and galvo mirrors
    thanks for point this out dan saves me wasting money and losing power
    i would rather spend time cleaning optics after each meet
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  5. 01-30-2010, 03:16 #55
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    Quote Originally Posted by danielbriggs View Post
    I found this on my travels...

    B+W UV looks like the one to have... but £30... Shabba
    ..and here's B&W's skylight and UV comparison

    http://img62.imageshack.us/img62/3985/laser.gif

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  6. 01-30-2010, 04:13 #56
    FourDee
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    Buying a piece of AR glass (from medialas for example) is just as expensive / cheap so why bother with those photography filters?
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  7. 01-30-2010, 11:10 #57
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    Quote Originally Posted by FourDee View Post
    Buying a piece of AR glass (from medialas for example) is just as expensive / cheap so why bother with those photography filters?
    Just my thought.

    You can get a piece of AR glass cheaper than a UV filter
    http://www.laserextreme.nl
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  8. 01-30-2010, 17:03 #58
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    What's the best way to mount a piece of AR glass or photography filter on a projector? Are there standard size brackets that you can screw in? Or maybe just glue it to the enclosure?

    Mike
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  9. 01-30-2010, 17:32 #59
    carlos3621
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    Quote Originally Posted by badger1666 View Post
    i dont think i will bother fitting one then i did not know if i used one i would lose another 10% of projector power ,i already lose over 200mw from the crappy laserwave dichro's ,and galvo mirrors
    thanks for point this out dan saves me wasting money and losing power
    i would rather spend time cleaning optics after each meet

    dont do this.... i tried this and if you ever do a gig using an oil based fogger/ hazer,
    it will completely kill the output of your laser,,,,
    i just purchased a glass ar coated window, from thorlabs, 29.00$ , mounted it with clear silicone, DONE.
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  10. 02-03-2010, 04:03 #60
    FourDee
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    I found my invoice from medialas the other day.
    I payed 13€ for a piece of 60x60 AR glass. I don't think you can get a decent UV filter for that ...
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