405nm Dichro's

**tocket** · 12-18-2008, 12:05

I'm going to start bookmarking useful posts on this forum, starting with the above from Steve. Great information!

**allthatwhichis** · 12-18-2008, 13:45

Originally Posted by allthatwhichis

One thing I think we may have to look into is not mounting all of our lasers at the same angle to the dichros. I have noticed in my projector that 45 degrees is not the best angle for all my filters.

My reflect green dichro has a sweet spot for transmitting red and reflecting green and neither are 45 degrees. I first found the transmit red sweet spot and then mounted my red and then found the sweet spot for green reflection and mounted the green at that angle.

Then my reflect blue dichro has a sweet spot for transmitting green. The Red transmits well at all angles and the reflect blue seems to do well at all angles, so had to "tune" the angle for the best green transmittance.

Here is the final resulting layout. Granted, I do not have a meter to verify these are the sweetest spots, but by using vision, this is the most efficient layout I could find:

http://www.photonlexicon.com/forums/...&pictureid=289

Just a link as the picture is BIG.

O yea, there is the 660/635 dichro that needed all kinds of angle tweeking and it still is not that efficient. If you would like to see all of the angles tried, or at least pictures of the evolution of the angles, here is my album for the "box"
. http://www.photonlexicon.com/forums/album.php?albumid=8

Thanks Steve. This is kind of what I pointed out from my trial above. Looks like I need to rotate the dichros to check that "angle" also. I need to get a meter also...

**daedal** · 12-18-2008, 14:36

Hey Aaron, we'll sort that out this weekend if you're feeling up to it?

Gimme a call cuz I'd like to know before I set mine up wrong... lol

--DDL

**daedal** · 12-18-2008, 14:36

Double post...

--DDL

**bridge** · 12-19-2008, 01:12

Hi guys,
good news here.
As we planed, 405nm PBS is ready for shipping.
yes, pictures. I will begin a new threads about 405nm PBS, thanks.
Best regards!
Bridge

**stanwax** · 12-19-2008, 02:14

As I should have the 405 dichros in my possesion today please use the following page to make payment UK & Euro only!
http://www.stanwax.plus.com/lw/pl405dichro.html
Rob

**xntrix** · 12-19-2008, 02:20

Payment sent - thanks. David.

**stanwax** · 12-19-2008, 02:32

thanks David
As soon as I posted there was a Knock on the door - so I do indeed have them in my posession
Yours will be in the post today David

Rob

**xntrix** · 12-19-2008, 02:34

Thanks Rob - remember the First Contact too

**allthatwhichis** · 12-19-2008, 05:58

Who are we paying and when?

Here in the US?

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