No, the problem is with the P22 green phosphor as I said.

You can easily see that yourself by looking at the DDD ghosting test on a CRT monitor, you'll see that the center ghosting is mostly green and somewhat blue but never red on CRT monitors using P22 phosphors. You'll also see the same thing on most Plasma displays since they generally use the same types of phosphors than CRTs, that's the case for the Panasonic VT20 for exemple :



Some more references :

3-D Displays and Signal Processing: An Answer to 3-D Ills? :
"In systems using CRT monitor (or projector) and liquid-crystal shutters, the crosstalk is caused by
phosphor persistence of the CRT (primarily green), imperfect light extinction of LCS in the opaque state (light
leakage) and by timing errors of LCS (opening/closing too early or too late)."

Crosstalk (Ghost Images) :
"The main cause of ghosting is the slow phosphor decay time. Monitor tubes with P22 phosphors (zinc sulfide for blue/green) are very bad in this respect. Much better would be P43 tubes (rare earth for green). The problem is: P22 dominates the market. I couldn't find a mainstream non-P22 monitor yet. If you can find any please tell me or post it on the discussion board."

Cancellation of image crosstalk in time-sequential displays of stereoscopic video :
"The three-channel model is appealing since in a typical monitor R, G and B phosphors have different characteristics; for example, the green phosphor’s persistence is longer than that of the red and blue phosphors."

"Encouraging experimental results for P-43, a rare-earth green phosphor, replacing the standard P-22 phosphor have been presented"

Depth Perception in Computer Graphics :
"To avoid problems caused by phosphor persistence between the left and right views, the stimulus objects were coloured red. Informal experimentation demonstrated that red phosphors had a faster decay time than the green or blue phosphors on the CRT used."

The Ce:YAG green phosphor is used in cathode ray tubes as it is said, but not in the ones used for CRT monitors. These tubes are used in photomultipliers, which are devices used in research laboratories to detect interruptions in beams of light.

Most of the tubes in CRT monitors use P22 phosphors (ZnS:Cu,Al composition for green) which are sometimes but very rarely replaced by the P43 green phosphor (composition : Gd2O2S:Tb) which doesn't exhibit the ghosting problem.

Anyway, that P-22, P-43 sh*t is old .
"An Advanced Nanophosphor Technology for General Illumination"


then panasonic are cheapskates too? cheap posphor? no-cadmium behavior? who woulda thought.
http://apps1.eere.energy.gov/buildings/ ... tfolio.pdf

!!!So in theory its also possible to make flatpanel TMOS / MEMS phosphor display with CRT rgb coverage!!!
protip:Forget about hold time.

-in theory, cadmium doping solved your afterglow even before 70's, but cheapskate manufacturers researched no substitute for rare earth doping!!!

Kinda feel this thread should now be renamed "battle of bull sh!T". I am an engineer. And I know when the B.S. is flying. I'm just not impressed.

Cheers everyone

Is green phosphor wrong, or it's just scrambled?
http://catalogs.infocommiq.com/AVCat/CT ... t=xj-st145
ultra short lag green phosphor here


we'll see , it looks better to me than the amoled vs Prysm topic over avsforums, soon we'll know if we are into something here , cause I asked "xrox" @ avsforums , and someone over Prysm too.
http://www.prnewswire.com/news-releases ... 17554.html
http://www.displaysearch.com/cps/rde/xc ... n_2011.asp
look,
this market is begging to be disrupted, and hopefully the market leader to be dissolved


Apple TV is coming in 2011 too

ghosting / crosstalk:
http://cmst.curtin.edu.au/local/docs/pu ... _woods.pdf

Fredz, how you like that fugly red

Lol!
Back to the topic: Hows the weather in chicago?

CRT mk2 projectors might come back too.

The stuff you talk about when you say "CRT mk2" does not use cathode ray to light up the phosphors. It has nothing to do with CRT !
CRT is dead, please let it rest in peace !!!

whew,,, could you pick on the "laser turntable" stuff too ?

BTW you should know by now that CRT is the king of the displays, & ppl going to compare their stuff to CRT, not some liquid crystal mess, no matter what.
LED DLP gets compared to CRT ! That's the way of life!
& you are wrong too,anyone tells you that the phosphor screen+shadow mask is the most important part of a CRT , that makes it analog for the most part. & other people are wrong too , if they think cheap digital can hold a candle to CRT, it can't. Lol.

Any phosphor related stuff , even RGB LED's can be traced to have CRT heritage/origin, practically too, because of color coverage &stuff, you know phosphor stuff is pretty good at that!

Just because plasma is a bad example of phosphor pulse display that doesnt mean that the CRT kingdom is hurt, not a bit man...

"CRT is dead" , it's like saying culture is dead, lol. You are a subculture of a subculture, hatin' on CRT , so irrational...

I heard disco was coming back.

that's too bad, they can sell those guys anything, even anaglyph ^^

oh, and only if CRT would come back, the sheer optical efficiency would be so high , you'd see anti glare galore with electromagnetic shielding....

Compare that with joke company's glossy screen. I'd fabricate a FUD that glossy screen is bad for your eyes! And I'd win!

about to buy this monitor today off ebay. any concerns LMK.

I'm not talking about "king" or benchmarks, I'm talking about being alive or dead.
CRT is a benchmark but almost nobody buys them anymore and they're used by fewer and fewer people, it's dead.
Photographic film is the benchmark of photography but almost nobody shoots with film anymore, it's dead
Cinema 35mm film is the benchmark of cinema, but it is beaten by modern 4K digital cinema, and it is crushed by 70mm film : 35mm film is still alive although it's starting to die, 70mm film is the best technology available (you could say it's the king of cinema) and it died years ago (Imax has been pretty much the only user of 70mm film for the last decades)

As long as you understand the pros (brightness, passive, simultaneous eye views) and cons (half resolution when you put the glasses on, small vertical view angle in 3D) of this monitor, not much to be concerned about.

Sweet!!!!!!!!! Maybe we'll get 8 track tapes, too.

cheers everyone

Seems like a decent monitor, should be similar to the Zalman. It does have a number of downsides you should be aware of, like reduced resolution and small viewing angles. But the 3D itself will probably look nice (when you are in the sweetspot). So its not going to be the best quality 3D out there, but should look pretty good on its own right.

Let us now how this works out for you [LG D2342P-PN (Passive)]. I would be interested in your findings. Thank you.
cheers

-check this out guys , this is my new favorite youtube video, I call it:
the FUTURE meets CRT ( CRT jr. )
[youtube]http://www.youtube.com/watch?v=wZ97AzZmFQM&NR=1[/url][/youtube]
[youtube]http://www.youtube.com/watch?v=IlDG3PKTc7s&feature=related[/youtube]

I own an MEMS laser projector, and while it is very nice, they will NEVER, EVER go mainstream. There are very strict limits on how powerful collimated lasers can be in consumer devices when they are not fully contained, as in a laser projector. You will never see laser projectors on the market that are over 50 lumens or so because of that.

(...)
wrong!

then hackers do it and who gives a flying f about mainstream. :b

Just gimmie a decent pointing mirror.

BTW laser pico paralleled sounds like a dream,but they should give us about 150 lm at least.

The mirror is not the problem, it is the triple laser alignment.

You might not guess it, but I am actually an avid laser enthusiast and experimenter, and I have quite a few I have made!

Red, green, and blue lasers all have very different beam shapes/characteristics. Getting them to all be the same shape and width requires custom optics that need to be very close to the diodes, and perfectly aligned. The only way to do that would be with custom optics and housings that would cost tens of thousands in a small batch, for the tolerances needed.

And then, after you have all the beams shaped properly, you need to have them going in the exact same direction, with NO divergence. I use these for my RGB laser: http://www.o-like.com/index.php?main_pa ... ucts_id=66

They let you combine the three beams, but getting them to not diverge at any kind of distance is very hard! I can adjust my laser to still converge on the same point at 20 feet or so, but just the heat from the lasers running for a few minutes expands their metal mounts enough to shift the beam every so slightly. The beam in the air is still white, but at the other end, it is just a red, green, and blue dot all very close together. In a laser projector, this would be a deal killer. Apart from all the optical problems, you need an extremely accurate video timer to turn the lasers on and off at the right time. I really wish that it were possible to do (I would love to rip open my current 15 lumen projector and throw in my high powered custom RGB laser to get 600 lumens or so), but it is not possible on a hobbyist level, not for me, not for even the most experienced laser hobbyists in the field.

/rant

Microvision said they are scaling up their technology and this will be good . Once 1080p 120hz I'm sure in regardless luma. Others come too .

BTW where you got that laser from , you can take apart a LaserVue?
http://cgi.ebay.com/Mitsubishi-LaserVue ... 4cf6aaddb5

look maybe you should buy it!

Yes, Microvision is scaling up in resolution, but not brightness. They want to make their light engine smaller, not larger. Useful for handheld devices, but I could not handle 50 lumens for a home theater projector.

Thanks for that link, I will be looking into it. I have both of the Microvision projectors, and the RGB laser I have is custom built from scratch, using a 1200mw 445nm blue laser, a 300mw 532nm green laser, and a 1000mw 650nm red laser, along with all the combining optics and power supply boards.

...we are looking into this stuff too.
FPGA chip can do all that stuff btw and more, with FPGA you can even have feedback ...

I mean looking into buying that TV. I actually live in Colorado about half the time, so I might actually be able to save on shipping costs and just pick it up!

I will have research the LaserVue system more, though. In a perfect world, you could just feed it a mirror video input, and use the laser scanning unit inside as-is for a projector!

Even 5mW lasers are harmful for the eyes if pointed directly to them. 2.3 watts is even cooler!!!

I'm not a laser specialist but 3-LCD, 3-DLP and 3-LCoS also need to assemble pictures from 3 sources, so it seems surprizing to be that it would be so difficult to assemble the 3 lasers from the same kind of trichroic prisms as the ones used by other projectors.
Divergence is always present with these projectors but 3.5 metres away it's about one pixel overlap on my 3-LCD projectors.
I find it difficult to believe it would be that hard to converge these lasers just centimetres away from the mems unit well enough.
Or to find tricks around the issue (use a larger mirror, use an array of mirrors, add manual or automatic precision alignment screws)

(again I'm not a specialist, I just assume stuff)

read this:
http://www.optoiq.com/index/photonics-technologies-applications/lfw-display/lfw-article-display.articles.laser-focus-world.volume-44.issue-10.features.projection-displays-lasers-and-mems-take-video-projection-beyond-hdtv.html

wow:

I guess you'd be very interested in checking what fermilab and cern (among some others) are doing.

Can someone pass the popcorn.

Like this?

Were gonna build another DeathStar. Okay, I'm onboard with that.

It will work.

Actually, we will need to build 3 DeathStars. One red, one green, and one blue.

Put down that pop corn!
I want you to speculate about the Apple TV! Will it be passive? Will it be propeller?

No secret, I hope it comes with propeller...!

http://www.geekculture.com/geekcultures ... iProp.html

...ok,,,,

if you have that popcorn over there somewhere
http://www.avsforum.com/avs-vb/showthre ... 112&page=2



this guy ,,,, this guy,,, AAAAAAAAAAAAAAAAAAAAA
*agononizes and dies*

I didn't know popcorn was that dangerous. Pretzels yes ! but popcorn...

Dude paid close to half a million dollars to watch 2D content with real-time automagical conversion?!?!?! Damn, if I had that kinda money I'd build THE FRIGGIN' MATRIX!!!!!