New Light Source Technology from Elation?!
- Thread starterrsmentele
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I actually just read the manual on a Christie projector that talked about the technology but This is a really good article:
https://www.lifewire.com/how-laser-based-video-projectors-work-4132351
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Eventually someone - apparently - came out with a LARP system!
Frankfurt saw the first units a couple of years ago, I'm sure about Claypaky presenting a concept light (with a huge front lens) and at least another producer as well.
I've seen a demo of this technology something like 3 years ago, it was pretty stunning to see the amount of light emitted by such a small source (althought at the time it was a prettty yellowish beam, almost useless to us).
The idea is that of having multiple arrays of blue laser diodes collimating to the same point , a wheel covered with different phosphors is than spinning extremely fast (to mix the different hues created by the different phosphors) to convert the blue to white.
The refresh rate is given by the wheel's speed, so it could be interesting to see how this performs with HD cams and slow motions / close ups. Maybe the future will see versions with multiple wheels to increase such rate.
It is pretty scalable and - theorically - the efficiency of the system is not affected by the rated power. More diodes --> more light and more current needed.
Compared to "normal" LEDs we are not in the solid state world anymore, but we anyway have a lot of motors and wheels moving around it should not be a big problem.
Frankfurt saw the first units a couple of years ago, I'm sure about Claypaky presenting a concept light (with a huge front lens) and at least another producer as well.
I've seen a demo of this technology something like 3 years ago, it was pretty stunning to see the amount of light emitted by such a small source (althought at the time it was a prettty yellowish beam, almost useless to us).
The idea is that of having multiple arrays of blue laser diodes collimating to the same point , a wheel covered with different phosphors is than spinning extremely fast (to mix the different hues created by the different phosphors) to convert the blue to white.
The refresh rate is given by the wheel's speed, so it could be interesting to see how this performs with HD cams and slow motions / close ups. Maybe the future will see versions with multiple wheels to increase such rate.
It is pretty scalable and - theorically - the efficiency of the system is not affected by the rated power. More diodes --> more light and more current needed.
Compared to "normal" LEDs we are not in the solid state world anymore, but we anyway have a lot of motors and wheels moving around it should not be a big problem.
GreyWyvern
Well-Known Member
DELO72
Well-Known Member
We showed something we called "PHASER" for PHospher + lASER. It's pretty much as Wheat describes above. For the low powered ones such as are used in high-end vehicles as "super high beams", it's just a blue laser diode hitting phosphor to create a narrow beam of light. For the higher powered ones, the energy of the laser is such that a static phosphor would burn up too fast, so it has to go on a spinning wheel, and be a ceramic-based, high temperature phosphor to survive the intense energy being driven at it. Gaps in the phosphor give you blue laser. different phosphors give the ability to project different colors, and how you synchronize the laser pulses and the spinning of the wheel allows you to blend the different colors coming out to achieve (visually) a color in between.
GreyWyvern
Well-Known Member
That's right, I remember now. Pretty cool stuff!
Yeah. @DELO72 's phaser was pretty amazing and a little frightening. It looked like it was capable of shooting down satellites.
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