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Old 02-16-2011, 04:27 PM   #33
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Default Re: Anyone knows anything about a Pr3+ laser?

Quote:
Originally Posted by HIMNL9 View Post
^ Yes, but afaik, the more illuminating single-diodes picoprojector, actually, is around 120 lumens max total, not around 2500 / 3000 .....

If they had used a single 30W 445nm laser source, DPSS or not, you don't think it may worth also dismantle 600$ of projector, for get it in your hands ? .....
Some would, but look at the ever increasing population here that complain about $40 445 diodes being too expensive. I think the number of people on this forum who would actually pay $600 is fairly low.. Even for 30W... though I don't really think they'll be that high powered. Plus i'm sure the beam specs would be godawful too.
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Old 02-16-2011, 09:11 PM   #34
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Default Re: Anyone knows anything about a Pr3+ laser?

for a DPSS laser?? how can the specs of a DPSS laser be aweful? compared to an injection diode?? beam specs are neat!

and of course they wouldnt be high powered...there would be more than one
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Old 02-16-2011, 09:35 PM   #35
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Default Re: Anyone knows anything about a Pr3+ laser?

i'm talking about the theorized 30W 445nm pump, which is what HIMNL9 mentioned.
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Old 02-16-2011, 09:40 PM   #36
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Default Re: Anyone knows anything about a Pr3+ laser?

aahh!

as this thread is about the Pr doped stuff, and the main thing was to get a white DPSS laser, i thought he was talking about a 30W output laser on the white range...

didnt notice he said the pump diode

even so, my point is that they would get modules of a Pr doped thingy in a system like our greenies and have several of them...unless the structure of the doped glass would be enough to accommodate lots of power...then maybe they would only have 1 glass and several pumps...
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Old 02-17-2011, 02:04 AM   #37
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Default Re: Anyone knows anything about a Pr3+ laser?

He didn't say pump, however since this Pr3 material is getting pumped with 445.. I can only assume that's what he meant.

Though for display use, the actual wattage wouldn't need to be nearly that high even for the Pr3 stuff. Projection would need higher wattage yes. But TV's and things of that nature generally only need about 1/3 the light power of a projector. And that's just for DLP. A scanning beam configuration would need even less power, since less of the light is 'wasted'.

Though at any rate, everything right now is just a theory. It will probably be a few years at minimum before any laser based equipment using this technology hits the market, at any price.
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Old 02-17-2011, 07:30 AM   #38
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Default Re: Anyone knows anything about a Pr3+ laser?

True, TV and similars needs much less power, but this, ofcourse, is caise you are looking at the source of the light (screen, plasma, OLEDs, etc) ..... where instead in a projector, you look at the reflex of the light source, and also spreaded on a larger surface ..... so, the apparent brightness is much less than when you look at the light source directly, and for get a decent level of luminance, you need much more power.

different is the case of a "raster scan" type laser projector, where the laser beam make the image "scanning" the horizontal lines, like the electron beam in a standard phosphor tube ..... this may require less power, but for the counterpart, we still don't have scan projectors that can obtain decent results with this system (yet).

@ LordKaramazov: you're right, sorry, we have derailed a bit the thread original topic (but, after all, isn't for this reason that topics exists ? ..... for become first or after derailed, i mean ..... j/k )

Staying (almost) ontopic, no, i doubt really that they can use a similar multi-wavelenght system for a projector unit, or for something related to projection, at least in short times (some years, i mean) ..... it does not seem having too much efficence, compared with "standard" RGB lasers systems, imho ..... at least, at the actual state of developement.
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Old 02-17-2011, 09:03 AM   #39
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Default Re: Anyone knows anything about a Pr3+ laser?

the whole point of doing a system with this laser or similar wavelengths would be to get a wider range of colors, and in the end a much richer picture...

and yeah..those 445nm from nichia took around 5 years to get to us...id say this one would even get more. They had the first doped stuff pumping in around 2006/2007...but we can only have faith that the industry will actually take this stuff to a marketing level
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