LG D2342P-PN (Passive)

Post by **tritosine5G** » Tue May 10, 2011 11:26 am

ghosting / crosstalk:
http://cmst.curtin.edu.au/local/docs/pu ... _woods.pdf" onclick="window.open(this.href);return false;

Fredz, how you like that fugly red

Post by **Likay** » Tue May 10, 2011 1:30 pm

Chiefwinston wrote: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

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

Post by **tritosine5G** » Wed May 11, 2011 11:21 am

Advantages and disadvantages
Advantages

Long service life, CRT tubes maintain good brightness to 10,000 hours.[2]
High end CRT projectors can precisely display images up to 1920 x 1200 [3][4] with accurate color reproduction. A few projectors can scan at even higher resolutions up to 3200 x 2560, although their ability to resolve fine detail at this resolution is greatly reduced.[citation needed]
Superior black level compared to LCD and DLP based projectors.
As with CRT monitors, the image resolution and the refresh rate are not fixed but variable within some limits. Interlaced material can be played directly, without need for imperfect deinterlacing mechanisms.
CRT projectors do not show a Rainbow effect seen with single chip DLP projectors.

Disadvantages

CRT projectors are both considerably larger and heavier than comparable LCD and DLP projectors[5]
CRT projectors require far more time to set up and adjust than LCD and DLP based projectors
Absolute ANSI brightness achievable with CRT projectors is lower than with comparable LCD and DLP projectors.
Low-end or poorly tuned CRT projectors may suffer from color divergence.
CRT projectors use more power / cost more to run than LCD, DLP units.

CRT mk2 projectors might come back too.

Post by **BlackShark** » Thu May 12, 2011 1:38 pm

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 !!!

Post by **tritosine5G** » Thu May 12, 2011 1:52 pm

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...

Post by **cybereality** » Thu May 12, 2011 8:43 pm

I heard disco was coming back.

Post by **tritosine5G** » Fri May 13, 2011 12:04 am

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!

Post by **neol** » Fri May 13, 2011 2:00 am

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

Post by **BlackShark** » Fri May 13, 2011 5:19 am

tritosine2k wrote: 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'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)

Post by **BlackShark** » Fri May 13, 2011 5:21 am

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

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.

Post by **Chiefwinston** » Fri May 13, 2011 8:45 am

cybereality wrote:I heard disco was coming back.

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

cheers everyone

Post by **cybereality** » Sat May 14, 2011 9:32 am

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

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.

Post by **Chiefwinston** » Sun May 15, 2011 12:11 pm

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

Post by **tritosine5G** » Mon May 16, 2011 1:11 pm

-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=IlDG3PKT ... re=related[/youtube]

Post by **PalmerTech** » Mon May 16, 2011 1:26 pm

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.

Post by **tritosine5G** » Mon May 16, 2011 1:40 pm

(...)
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.

Post by **PalmerTech** » Mon May 16, 2011 2:08 pm

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" onclick="window.open(this.href);return false;

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

Post by **tritosine5G** » Mon May 16, 2011 2:23 pm

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" onclick="window.open(this.href);return false;

look maybe you should buy it!

Post by **PalmerTech** » Mon May 16, 2011 2:38 pm

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.

Post by **tritosine5G** » Mon May 16, 2011 2:45 pm

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

Post by **PalmerTech** » Mon May 16, 2011 2:53 pm

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!

Post by **Likay** » Mon May 16, 2011 3:14 pm

PalmerTech wrote: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.

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

Post by **BlackShark** » Tue May 17, 2011 7:38 am

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)

Post by **tritosine5G** » Tue May 17, 2011 9:32 am

read this:
http://www.optoiq.com/index/photonics-t ... -hdtv.html

wow:

Post by **Likay** » Tue May 17, 2011 3:24 pm

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

Post by **Chiefwinston** » Tue May 17, 2011 3:57 pm

Can someone pass the popcorn.

Post by **Chiefwinston** » Tue May 17, 2011 4:51 pm

Like this?

Post by **Chiefwinston** » Tue May 17, 2011 4:52 pm

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

Post by **Chiefwinston** » Tue May 17, 2011 6:00 pm

It will work.

Post by **cybereality** » Tue May 17, 2011 6:25 pm

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

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

Post by **Likay** » Wed May 18, 2011 3:02 am

Chiefwinston wrote:It will work.

Post by **tritosine5G** » Wed May 18, 2011 3:12 am

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" onclick="window.open(this.href);return false;

Post by **tritosine5G** » Thu May 19, 2011 4:50 am

...ok,,,,

if you have that popcorn over there somewhere
http://www.avsforum.com/avs-vb/showthre ... 112&page=2" onclick="window.open(this.href);return false;

I am driven to put together some of the highest performing projection 3D systems anywhere for a few select patrons,for example one budget is 140,000 for a modded 4k projector, 40,000 for a suitable fixed lens, 90,000 for a reald d xlw polarizer, 75,000 for a teranex doremi 2d to 3d realtime conversion kit and 80,000 for a custom torus screen. I love it there is no better 3D.

That being said I hope LG puts samsung , panasonic out of business this year.

The garbage they sold consumers set me back weeks of downtime with optical nerve aches and twitching eye problems. It is a crime and they should pay for it .

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

Post by **BlackShark** » Thu May 19, 2011 2:19 pm

tritosine2k wrote:this guy ,,,, this guy,,, AAAAAAAAAAAAAAAAAAAAA
*agononizes and dies*

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

Post by **cybereality** » Thu May 19, 2011 6:25 pm

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!!!!!

Post by **Chiefwinston** » Fri May 20, 2011 8:52 pm

Well I think 3D Blu-rays on my home 50" panasonic plasma look better than my local theaters. And my local theaters use high end Christie DLP tech. But I have no way of proving this through links or other technical specs. But it is my honest opinion. And last years LG 3D displays were dissapointing to me. I cant say for the new passive displays. Though I'd like to here good thing about them.

cheers everyone

Post by **cybereality** » Fri May 20, 2011 9:03 pm

Yes, the big screen 3D HDTVs look far better than the movie theaters. I have watched clips of Avatar on a 60" Panasonic Viera, and also a number of movies on a 60" Sony Bravia (Meatballs, Alice, Shrek, etc.), all movies I have seen in the theater and they looked better on the HDTV.

Post by **tritosine5G** » Thu May 26, 2011 12:46 pm

with plasma, brightness is so low, I wouldn't call that white, white.

Same thing really with silverscreen projectors, thats not really white, at least some meaningful figures.

RGB LED , properly excited phosphor ( no plasma), laser... That's where it's at.

FYI, today's LED TV's monitors arent white either, cheapo LED's have way too much blue spectral stuff going on , hence ppl bitching about it.

Post by **PalmerTech** » Fri May 27, 2011 1:08 am

tritosine2k wrote:FYI, today's LED TV's monitors arent white either, cheapo LED's have way too much blue spectral stuff going on

Most newer LED backlight based TVs these days are pure white, probably even closer than your average metal halide projector lamp. The "blueish LED" problem only exists with cheap LEDs, TV backlights most commonly use very nice LEDs that are manufactured by Nichia, and they are engineered to provide nearly flawless white light for most of their effective lifespan (Which is in the 10,000+ hour range, minimum).

Post by **tritosine5G** » Fri May 27, 2011 1:12 am

effective lifespan (Which is in the 10,000+ hour range, minimum).

This can be improved with pulsed operation, Phlatlight leds supposed to do 100.000 in pulsed operation , and maybe 20k in constant lit up mode. So hold operation is bad, again. ^^

Blue stuff: theres a guy here ( console gamer) , went out and measured TV's input lag and stuff, each he could find, and he said each is blue.

He wanted to buy LCD, admitted these are time machines, went with plasma, went mad because phosphor burn in, I don't know what he has now! Fun fact: serious tekken pro-players still use CRT.*

Yes I saw papers about white LED's, they used nanotechnology, looked decent! I don't know if cheap LED's are any decent, but LED TV manufacturers are reusing CCFL nowdays anyway.

Maybe Apple can afford those cool LED's, but I'm not sure I want to afford anything with colorfilters.

*
http://user.tninet.se/~vhw129w/mt_audio ... sl57_2.JPG" onclick="window.open(this.href);return false;

nice CRT there too. BTW Im building speakers like those ATM.