The Kvants are nice in that video don't get me wrong, but the saturation of OPSL just can't be bettered from what I've seen.
Tarm are advertising Red in OPSL in their projectors but so far as I know, the reds are only avalaible in 1 watt units (639nm).
I'm sure OPSL does produce the best magenta red ever though even with just gold, blue and green. From memory, I ran it through Chroma a while ago and look at these pics from Awakenings (I'm presuming this is mixed red and not 639nm):
To my eyes, thats the most beautiful colour.
I take the point on the projector numbers though. The only reason I brought the subject up was because of the price of OPSL which as you pointed out is massive. I doubt any club could afford to purchase 24 OPSL 3 colour whites.
BTW does anyone know, was this just a demo or a permanent install?
Last edited by White-Light; 06-12-2009 at 02:27.
Just wanted to add, double click the original video Ibiza 1 to run it in full screen. I didn't do this the 1st time and it looks so much better in full mode.
Full Kudos to Kvant for an excellent demo show.
I rather like the colours in this awakenings video clip.
Very nice, but I think they are a couple of Jenlas if it's one of Hugo's shows...
I can't see how you would get red by mixing any combination of yellow, green or blue OPSL and Magenta is a mixture of red and blue... I might be wrong, but isn't red a primary colour?
Mark
Yes but yellow is a mixture of green and red so if you have a yellow laser there's a red component to it.
I don't think you can get a pure red from y,b,g but you can get a magenta, at least according to chroma:
Assuming the plot to be accurate, you can see the boundary lines extend into magenta, pink and purple, albeit only just.
Wavelengths used in the plot were 532 Green, 460 Blue, 577 Gold:
I do have to say though, after revisiting the plot, it seems likely that the colour above is 639nm or a mixture of 639 and the others.
Last edited by White-Light; 06-12-2009 at 10:28.
That's not correct. If you have a laser that lases yellow (such as a 594 nm hene), then you can *not* get red from that. There is no "red" component, there is only the 594 nm yellow. If you pass the beam through a prism or diffraction grating, you will not get anything except that one yellow line.
Now, if you *make* a yellow beam by mixing red and green together, then you can separate them back out using a grating or prizm, and you'll be able to see the red and green lines.
Don't forget that the display picture that Chroma uses is limited by the phosphors of your monitor. There isn't a good way to describe what you get when you mix yellow, blue, and green, but it's not going to look like what you would normally consider magenta. Note that you *can* make white with just the yellow and the blue, however, and it's a beautiful, electric white.I don't think you can get a pure red from y,b,g but you can get a magenta, at least according to chroma:
Adam
Yep its not made by mixing Adam but red HAS to be in there as yellow isn't one of the prime colours R,G,B so by definition its a mixture of 2 or more other colours (yellow being red and green).
So for the diode to output yellow it has to be lasing at both red and green wavelengths simoultaneously. Whether or not you can separate the red out is another matter. Chroma predicts yes, but without having access to OPSL to try, its very difficult to say. I do have to concede what I said above though, that the Awakenings red on reflection is more likely to be 639nm, as chroma suggests it wouldn't have the intensity seen in that picture.
Most lasers (with the exception of multiline gas lasers) lase at a specific wavelength. Remember, they were not originally designed for shows, they are far happier sitting in a lab, generating specific accurate wavelengths for specific purposes..
So a 594 laser lases at 594 only. To get red and green wavelengths, you need specific red and green modules mixed with optics.
A 594 module is designed to lase at exactly 594nm and nothing else... Maybe (and I emphasise maybe) this is where chroma could fall down....
Nonetheless, going back to the original topic... With a bit of creative programming and a knowledgeable operator, that Kvant setup could be absolutely stunning...
The lasers in your pic, I am 99% sure are Jenlas systems, I have seen them in the flesh and almost used them (long story) and they are an awesome bit of kit...
And YES, I love the word specific
Mark
Now Thats what im talking about!! crazy , crazy laser shows in europe