Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: two color mirror.

  1. #1
    Join Date
    Jun 2007
    Location
    northern maine.
    Posts
    329

    Default two color mirror.

    you might not think this qualifies as advanced discussion but i 'm hoping the results advance my technical knowledge.

    in the beam box i have,the first mirror in the beam path(set at 45degrees) bounces the green laser off it's front face and also allows a red beam to pass straight through the back face thus blending the beams.

    first question is, what is the proper name of this type of mirror?

    second question is, will a green beam pass through the back face of this type of mirror?(as the red beam originally did.)

  2. #2
    Join Date
    Apr 2007
    Location
    Toronto Canada
    Posts
    1,120

    Default

    Dichroic filters they called and you need to check a spec sheet to know what can go trough and with can be reflected. But normally you can pass trough green and blue and reflect red. But again its better to check spec sheet to be sure. I normally use green as a base mounted parallel. Then I put red side ways and have a filter to reflect red and pass green then I have blue side ways and filter to reflect blue and pass green and red.
    Last edited by Dr Laser; 06-20-2007 at 05:59.

  3. #3
    Join Date
    Jan 2006
    Location
    S.E. Florida
    Posts
    483

    Default

    "Gravity its not just a good idea its the law"

  4. #4
    Join Date
    Jun 2007
    Location
    northern maine.
    Posts
    329

    Default

    thanks guys.
    i figured dicro meant two color
    my suspicions are confirmed.
    i have enough of a grasp to know wavelengths can be allowed or denied through a filter.
    i guess that makes my question a little spurious.
    still thanks.
    i'm adding a green 100mw laser to this box and ,due to space restrictions,have to bounce the beam in from below where the red originally was.
    looks like i will have to remove the filter to allow the green to pass.
    i will lose the use of the original onboard green but that is only about 25mw.
    oh well,i'll only have to align one beam then.

  5. #5
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,488,218

    Default

    Quote Originally Posted by wes View Post
    looks like i will have to remove the filter to allow the green to pass.
    Absolutely. If you don't, the green beam will be reflected off the "back" of that dichro and sent off at a 45 degree angle just as the original green beam was reflected off the "front" of that dichro.

    Adam

  6. #6
    Join Date
    Jun 2007
    Location
    northern maine.
    Posts
    329

    Default

    well,i'm getting one of the lp532 100mws from dave.
    he said they often outpreform spec.output.
    maybe i'll get lucky and get one that makes up for bypassing the 25mw.
    even if it comes in right at 100mw,it will be such a huge improvement i know i will be happy.


    if i get verified today on paypal i will be ordering.

    woot woot!!!

  7. #7
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,488,218

    Smile

    I think you'll be impressed. Stepping up from 25 mw to 100 mw is a pretty big jump. Plus everyone I've talked to has always had good things to say about the kit that Dave and Aijii sell.

    Post some pictures when you get it up and running!

    Adam

  8. #8
    Join Date
    Jan 2007
    Location
    Florida
    Posts
    4,382

    Default

    Careful of the eyeballs- you only got 1 set!

  9. #9
    Join Date
    Jun 2007
    Location
    northern maine.
    Posts
    329

    Default

    yup yup.
    been doin' shows about four years now and i can still make out fuzzy images

  10. #10
    Join Date
    Jan 2007
    Location
    Florida
    Posts
    4,382

    Default

    Oh, ok ....................................

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •