So I wonder if the ebay diodes are the from the 2500 lumin version and the laser freak ones are a lower power.
chad
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So I wonder if the ebay diodes are the from the 2500 lumin version and the laser freak ones are a lower power.
chad
I am going to go buy a projector tonight.
I'm in for 4-5 if we do a group buy.
http://www.photonlexicon.com/forums/...559#post147559Quote:
Originally Posted by mophead
This sounds great.
although what is needed exactly to make this a proper module.
i guess its not like the 405nm just extract the diode and put it in a Aixiz housing? or?
will be very interesting to see a proper working after the group buy.
Does anyone have any idea as to the exact differences between the 2000 and the 2500 lumen model?
Could the 500 lumen increase be from the LED source as opposed to the laser diodes? Or more/high power laser diodes perhaps?
I just put mine under the scope. And you can see remnants of the glue.
Now the big question is what is the diff between the 2000 and 2500 versions.
Chad
Dave mentioned that the data we are seeing on these 445's relates pretty closely to the Nichia NDB7352 1w 445nm diode specs, maybe these things contain that die in a 5.6mm can and they just turn up the juice in the higher power projector..
Well, I'll be watching with interest what people do with these. I tend to remain blissfully ignorant of what goes on in all those 'building a module' threads, and now I think I've got some catching up to do!
I'm going for the 2500 version, so will tell your on Thursday.Quote:
Originally Posted by chad
There is also a 3000 lumen version in development due to be released soon. The A150? (I think)
Thanks me 'old mucker!Quote:
Originally Posted by p1t8ull
I hope so too... *warn :)
Could you power it up and measure the output power and measure the current before you harvest the diodes.
i have just suggested this to dan alsoQuote:
Originally Posted by mccarrot
The guy from laserfreak had the diode at 700mA for a few minutes *retardo
Sure thing!
I will post photos galore of the unit, working, during and after destructions begins. *retardo
I'm going to use at least one of mine and push it really really hard... take one for the team... >:)Quote:
Originally Posted by mccarrot
But please do it wit a good power meter and logger so we can see dent in the power curve.
Thats what I suspect.Quote:
Originally Posted by p1t8ull
Yeah - different threshold though ?Quote:
Originally Posted by p1t8ull
However I think the ebay guy ripped one of the 2500 lumen units apart. That would explain why he was so shady on details on what they were, because he didn't really know!
Oh well. Kudos to the guy for being so fucking smart.
I have mine running at 600ma and am getting 480mw out.
I will let it run for a while and see if it stays stable.
chad
Quote:
Originally Posted by chad
Hey Chad!
Please keep us posted on your findings. I'd like to see your test continue for 160 hours or so if you are willing to pull that off. If it survives that, Could you run a 500Hz modulation test on it peak to peak? Yes, I'm asking you to try and kill your diode... LOL! O_o
Also, Do these Casio projectors have a "class IV laser product" warning sticker on them? What about a key lock and interlock loop???? Now, I know after the lens the divergence changes the eye hazard greatly. But still... How the hell do they get away with this????????
There is no warning sign on the product I suspect. I think it is, what it is called a "green projector" with a "hybrid lighting source", half laser / half LED. I think nobody at casio thought about the possibility PL and LF people would split the beamer into pieces and harvest the diodes from the unit ;-))) Pretty cool and 5 thumbs up for the possibility !!!:D
Ah, but CD and DVD drives have had to comply with CDRH rules for years and the output of the laser is never even seen. Just seems like the rules have just been ignored or extremely tweaked.Quote:
Originally Posted by Nevermind29
I don't care anyway! I'd rather have the diodes!!!! *retardo*retardo*retardo*retardo*retardo*retardo*r etardo
Something just smells fishy though.
Could you do a run with a TEC mounted on it, if you have one?Quote:
Originally Posted by danielbriggs
Anyway, this is a huge development. Finally, we have good visible blue for even less $/mW than the Blurays...
Guess the 445nm diode production HAS ramped up. Time to bin those RGV projectors once and for all.
Does the Casio come with the red light source as LED, or do they have a 642nm laser in there as well? I do recall some pico-projectors having 642nm as a red source.
Too bad I don't have any cash reserves right now, or I would be in the GB. Ah well, if we keep doing these projector salvagings, some eBay seller will probably pick up and put the diodes on sale for $65 each. Not perfect, but better dan $450 a pop.
hey I called it *retardoQuote:
Originally Posted by aijii
Judging by the following picture, it looks as though these are run in serial. I would be interested to know whether or not any additional electronics are involved between the diodes.
Attachment 17329
I'm wondering if the laser assy could not be bought as a replacement part. That should be cheaper than ripping apart the whole projector.
I might actually make some enquiries with the Casio distributor tomorrow, as we do warranty work for them where I work :)Quote:
Originally Posted by jeejeedr
Hmm 2 months ago 445nm was expensive
1 month ago everyone was happy with $470 for each diode
Yersterday it was around $40.
Next week we might get them for even less :)
And now we have to tell casio they must add 640nm diodes in their videoprojectors !
1x640nm 500mw diodes for 20$ ! :p
(a dream maybe..)
Bring on the GAN green diodes!Quote:
Originally Posted by SrS
Quote:
Originally Posted by jeejeedr
I was wondering about this too, judging by the way things are worded on the casio site as well as the way the system is constructed it would make sense that the "sled" could be ordered alone as a replacement part.
I have been speaking to a senior technician from Casio today.
Replacement "lamps" are available, however there is no guide price at all; anywhere. They are also NOT a user replaceable part. If you need the hybrid "lamp" unit swapped out. You send your complete projector in to them, and they will swap it. That is the only way.
i.e. the parts themselves are NOT for sale...
Running >>12 hours per day, they are expected to last for at least 10 years.
There hasn't been as single request for a replacement lamp in the entire company so far. Things would look VERY odd if people were suddenly after lamp arrays left right and centre...
Rough ball park price was estimated around the price of a new projector anyway...
good work dan.Quote:
Originally Posted by danielbriggs
i think just order one/some and test power levels whilst still connected to the casio projector.
thens start taking to bits.
like i said dan feel free to send one my way if you want.
Can anyone suggest an option for decent, reliable, adjustable, analog modulation drivers for these diodes please?
1. buy casio beamer
2. swap 445nm diodes with cheap busted reds
3. send it to repair cuz it doesnt works
4...
5. profit!
6. get in trouble when they figure it out??
/ end of joke.
ehh, ill just wait for reviews and any further price drop in future *retardo
I started thinking about making blue only projector instead of green. It seems cheaper and smaller.
AFAIK there is currently no way (yet) to get green out of a diode laser directly.Quote:
Originally Posted by taggalucci
Cheap GaN direct blue is already a giant leap forward. All projectors using green lasers use 523nm DPSS.
At least we can say the demand for 445 will go up, meaning production will ramp up even further and blue will become the cheapest laser on the planet.
Ten years ago blue laser diodes were the holy grail. Who would have thought? ;)
I'm sure one of Dr Lava's Flexmod drivers would work quite well. And I believe Daedal also has an analog-modulated driver that will work, though it may not be able to supply enough current for full-power operation. (It maxes out at 400 ma, whereas the Flexmod can deliver 6 amps.)Quote:
Originally Posted by smogthemog
Adam
Thanks Adam, I will go with Lava's then.
Jim
EDIT - now purchased with Lasorbs as well :)
My understanding is that a GaN green diode was first demonstrated last year...Quote:
Originally Posted by Stoney3K
http://www.i-micronews.com/news/Sumi...stal,3330.html
I also read recently that a US company KAAI is commercialising green GaN diodes and demonstrated these at CES earlier this year.
Yes, they are run in serial. There's nothing strange about it really - I do it with my red laser diodes without any extra components. I doubt Casio use any in the projector either.Quote:
Originally Posted by taggalucci
Wow, great news. But I'm feeling confused, don't know if this news makes me happy or not, having just scraped all my pennies together for my first blue at 473nm a month back :p
This does have me thinking about a couple of flank projectors, and I haven't even finished the build yet, and definitely haven't recovered financially yet lol.
Also, as I've got my green dialed back a fair amount, I could use a bit more oomph in the blue. Someone mentioned combining 473 and 445 ? Could this be done via standard pbs ? or would an expensive dichro be needed ? I've got a flexmod and tec laying around, this sounds promising for sure.
I think i've got the bug now ;)
Does the projector diode assembly have a TEC?
if you have a single 473 and a single 445 you can do this via a standard PBS... its been done hereQuote:
Originally Posted by m0f
Yikes. That would mean DPSS is soon to be quite history. Currently that diode is running pulsed operation, nothing said about CW yet, but a projector with all direct-injected diodes would seriously dominate the low- to mid-end market.Quote:
Originally Posted by taggalucci
High-end users would probably stay with DPSS or go for OPSL because of better beam characteristics.
Doesn't Laserwave have reflect 473, pass everything else dichros in stock?Quote:
if you have a single 473 and a single 445 you can do this via a standard PBS... its been done here.
If these diodes pick up, I guess there will be more demand for reflect 445 dichros anyway.
Quote:
Originally Posted by Stoney3K
Yeah, but they'll reflect across a wider range of blue wavelengths other than just 473nm.
IF i only knew how to build one... :(
Glad someone suggested the Flexmods, I ordered 2 myself yesterday and wasn't too sure if it was the right thing!Quote:
Can anyone suggest an option for decent, reliable, adjustable, analog modulation drivers for these diodes please
Hope he's got a few in stock, I guess there'll be a bit of a rush on these....
I think you've just got to do it - I've never done one but I'm sure I'll be able to get the components together and assemble them and test with the help of the forum. Then the next ones will be a breeze, but you gotta lose your virginity sometime! ;)Quote:
IF i only knew how to build one...
hey norty
where are you in east sussex ?? pm back
i could always show you whats what;)
and dont forget when you start tinkering around you must be wearing an anti static band
or theres a good chance its bye bye diode,
i am near gatwick if you ever need help
Quote:
Originally Posted by norty303
I'm in Eastbourne so not too far away from you. It might be worth a run up to see you with the bits when the time comes, just to be clear before I go and inevitably break something!
Possibly a very silly thought, but does anyone know if it would be reasonably possible to fabricate a "Lens Duct" that would directly couple to the front of the diode mounting assembly as found directly in the projector.
I am thinking an acrylic wedge that is shaped and coated to have total internal reflection and that narrows to a maybe 1mm point that is AR coated.
The front face of the duct could have a bank of fast axis correction optics cast right into it...
Yea divergence out the narrow end of the duct would suck, but at that point you have a smallish source equal in fast and slow axis divergence, for that there are lenses.
Just a thought.
Regards, Dan.