OPSL Analysis

[mccarrot]

I run around 300mW of 473, 900mW of 635 and 700mW of 532 and to me - AND OTHERS - this gives a good, bright white!

How do you work that one out?

I think old laserwave dichroics, where you have 300mW 473, 400mW 532nm and 500mW 635nm AFTER the aperture.

Chroma is pretty right, but it does not take beamsize, beamprofile divrigence, mirror/dichro losses into the calculations.

[buffo]

How can anyone judge what is 'whitelight' when everyones eyes see's 'white' differently?
Chroma is as much use as the Pope's bollocks!

Just because there is some variation in what different people perceive as "white" doesn't mean that Tocket's Chroma software is useless!

As Jem mentioned, it is an outstanding tool to aid you in your projector design. No, you don't need to be 100% dead-accurate, because everyone's eyes are a little bit different, but it certainly helps to know in advance if you're going to be in the ball park or not with regard to white balance. After all, there may be some variation between people, but apart from colorblind people, what I call green is not going to look white to someone else, or vice-versa.

I've used Chroma several times, and I find it to be incredibly useful. Here is an example: You've got 730 mw of 660nm red and 200 mw of 642 nm red. You want to know how much green and blue you'll need to balance it. The answer is 210 mw of green and 310 mw of blue, assuming 532 nm and 473 nm, respectively. So call it a 200 mw green and a 300 mw blue. Close enough. But could you have figured that out in your head?

If you use the old rule of thumb (4x red to 2x blue and 1x green) you'd be *way* off. (That yields an answer of 465 mw for blue.) And who wants to pay extra for blue that they can't use?

Moreover, when you get into real power levels (like trying to white-balance a large frame Argon, for example), a mistake can be costly. So Tocket's software is a useful tool, even if in the end you don't use the exact numbers that it suggests.

I for one am glad he took the time to write it, and even more grateful that he released it for free to the members here to use.

Adam

[JeroenVDV]

Possible but I doubt it, Awakenings is not that big event. Its legendary but not big.

The location is 2500m2 and got a capacity of aprox 3500 party people.
Using a 10W Q-switched Jenlas is little bit overkill in this location, even when split over 2 heads.

All recent party Hugo uses 4W RGB lasers (RGB lasersystems modules) or 5W OPSL green with the power turned down!

At partys like Qlimax with 20.000 people he does use the Jenlas.

The Jenlas laser has been used on Awakenings in Eindhoven ("main" stage). And in the Gashouder in Amsterdam. So, no, the Jenlas doesn't only appear on the biggest events like Qlimax