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Thread: RGY Bandpass Filter....

  1. #11
    Join Date
    Oct 2006
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    Wink

    Quote Originally Posted by bridge View Post
    oh,no,Edmund's optics is only 12mm, $45.
    If you used one of my mirror, you will know which is better.
    Isn't this the one he needs Adam?

    "• FILTER 45DEG DICHROIC RED 25MM D Red 25mm Dia. NT47-266 $45.00 "

  2. #12
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    Default

    The Edmunds specs quote around 99% red reflectance and some loss of green (not much) which is better than vice-versa

  3. #13
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    Cool

    Allthatwhichis: Yep, that's the one!

    Here is a link to the graphs for the three different color dichro's that Edmund's sells. Reflectance is on the vertical axis and wavelength is on the horizontal axis. Note that the reflectance is very high for the rated wavelengths (99% or better), and for the "pass-through" wavelengths you're only going to loose about 3-5% to reflectance.

    Bridge:

    Edmund charges $45 for a 25 mm dichro. The 12.5 mm dichros are $40.

    Did you even look at the link before you posted?

    Adam

  4. #14
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    Quote Originally Posted by Buffo View Post
    Allthatwhichis: Yep, that's the one!

    Here is a link to the graphs for the three different color dichro's that Edmund's sells. Reflectance is on the vertical axis and wavelength is on the horizontal axis. Note that the reflectance is very high for the rated wavelengths (99% or better), and for the "pass-through" wavelengths you're only going to loose about 3-5% to reflectance.

    Bridge:

    Edmund charges $45 for a 25 mm dichro. The 12.5 mm dichros are $40.

    Did you even look at the link before you posted?

    Adam
    I am sorry for my mistake.I saw edmundoptics webwite long time ago.
    As you mentioned here, their 12.5mm dichros are $40,our's is 15mm
    reflection 99% is not problem,we can do it 99.5%,transmitted can as high as to 98%,if you can give me the polarization of your laser.

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