Originally Posted by
polishedball
Think there was a group buy on these some time ago, anyone want to part with one or have a source they could suggest?
Thanks
Hi, the group buy was for the 'Semrock' dichro. I believe that Semrock are still able to supply these if you contact them directly. However, they are quite expensive.
I bought one in the group buy and almost sold it. Then I decided to put it to use in my projector. It's currently combining a Laserwave ~300mW 342nm and a Dual Maxyzmodule ~400mW 660nm, the resulting colour is a beautiful mix which I think adds a real richness to the colour pallette.
However, as Marc rightly states, these dichro's are *very* angle dependant. So much so that it may be necessary to mount your lasers at a peculiar angle inside your projector to be able to acheive just the right angle of incidence. Half a degree off either way and the losses are unimaginable.
Rob (Stanwax) rebuilt my projector and I know he spent forever trying to get it correct. Obviously, he eventually managed it and the results are, in my opinion, extremely worthwhile.
I'm not sure if the Laserwave dichro will be the same, but i'm pretty sure it will be due to the close proximity of the wavelengths you're trying to combine.
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