3D projector using Infitec method? - Page 5

Pterodactyl,
I'm sure there's no way of you knowing or saying for sure, but can you ballpark for us when you think we might get our hands on one of these? Either at retail or, as *cough*trusted*protype*reviewes*cough*?

Also, I am thinking about users with not enough light throughput. A way to control color correction accuracy vs transmission factor trade-off would be welcome.

One parameter in the settings could be set to 25% 30% 35% 40% light transmission for example, color correction doing its best to catch up.

I'm just as impatient - I would also like to get one unit I hope we might be able to start sales about last quarter of this year.

Some units will be reserved for reviews, no promises but I'll see what I can do.


Agreed & added to list of features. The transmission factor however won't be so exact, probably there will be just a linear scale 0..100 between max. output & no correction and most accurate correction.

We have also started planning a professional version with 3D at 4K, 48 Hz (hardware already supports more than that).

Excellent news!! W.Mayer over in the DCI forum just installed the new Infitec filters in an a amazing dual 4k DLP setup and noted that color correction is really not necessary anymore!!! His exact words were:

"c. today its not color correct. a big advantage from this new filter is that you not "have" to do it.
it will looks better with the correction no question but i am not sure i will do it as i like how biright the picture looks now and with the correction i will loose some may 15 % or even more."


He also noted that it is brighter with the new filters as well.
For those that have bought the filters from Infitec before, see if you can get the new ones and let us know the price if you can.

Very interesting link: http://www.avsforum.com/avs-vb/showthread.php?t=1346057. Thanks Mikenificent.

W.Mayer is using xenon lamps in the Barco's. That's why he doesn't need (almost) color correction, no matter new filters or not new filters.
Xenon spectrum is much flatter than UHP lamp's (see end of document):
http://www.jumbovision.com.au/files/...hite_Paper.pdf

I'll believe in no correction when someone reports it with UHP lamps...

Yes, and from what I recall of older Hughes/JVC projectors w/ xenon lamps I used to sell, they are about $1/hr to run ($1000 cost for a 1000 hour lamp, not counting electricity costs of course...)

Even worse
Taking two pj into account, that's a 150 hrs average rating for the cost....

Either way, the new filters should be much better. Hopefully someone with a dual projector setup will be able to get their hands on them.

You are absolutely right, too bad I have my filters already (dolbys) !
Don't think I will move to the new infitecs, as I am getting 40% light transmission already... but you never know... Will depend on others' reviews.

What you think about to emulate infitec filters by LEDs ?

Well... it's not much... but I did purchase my first pair of Dolby Glasses from Ebay.

Yay.

That's a good start. You are on the right way to heaven...

Though.... experimentation is going to be difficult with only one pair....

What's this? Now I need more than one pair?

Actually I knew this. I got them for $20 shipped, but they only had one pair. Would have ordered at least three at that price had it been offered.

But now that I have the one pair of glasses, all I need is:

A new HDMI 1.4 compatible receiver
2 new projectors
A 3D Demultiplexor
Probably need to repaint my screen. I should do that right now anyways because I'm not happy with it currently... but this will give me a good excuse.
About 9 more pair of glasses- at least one that will make good filters.

So I'm almost there!

Blast! Looks like I missed two more pair of glasses today that went for $17 and $10.50 shipped. Hope someone hear snagged them.

Lasers are available (not necessarily at consumer oriented prices) for all the wavelengths necessary to fit into the existing Infitec filters. I don't know how easy it is to make LEDs with tight control over wavelength and bandwidth, but sounds feasible.

Edit: a little further investigation suggests that getting narrow enough bandwidth LEDs to reduce ghosting by leakage from the edges of the spectrum of one into that of its neighbour might be a problem. Maybe an LED specialist can chime in with real information than quick googling

Meant to be Seen in 3D's report on a visit to Dolby:
http://www.mtbs3d.com/index.php?opti...2569&Itemid=77

What are the wavelegths for the infitc filters?

these are quoted as an example, but are they real?

Left Eye: Red 629nm, Green 532nm, Blue 446nm
Right Eye: Red 615nm, Green 518nm, Blue 432nm

The numbers are meaningful, but they are taken from a system constructed with lasers, and do not translate directly to usual systems with (white) projector lamps.

A document with Infitec's measurements of filters is publically available, just try search terms like pdf, infitec, filters, etc. Also, somewhere on this forum I've seen measurements of Dolby's glasses.

Any news? How's the development going, Pterodactyl?

@xhonzi: I apologize, I haven't monitored this thread for a while, so I failed to see your message (but you've got a PM in the meantime).

We have a working prototype, full HD 2D and 3D over HDMI 1.4 are verified to work, HDCP, splitting for two projectors, color correction. The final product is still few months away, but we are very satisfied with the progress so far.

A colleague just told me we might go to some fairs to demonstrate the system... I'll post more information as I find out.

Thanks, I saw your PM too.

Pterodactyl,
does your company have a website or a mailing list so that we can monitor progress and be informed of the latest specifications of this adapter ?

We do have a website, but the adapter is not there yet, as we are still finalizing the specification and determining the best way to bring it to market. It is possible that another, or several different, or a newly founded company will sell it.

Anyway I'll forward your suggestions; in the meantime you can get an impression of what we do at www.mikroprojekt.hr (not everything is there, some other related interesting stuff like autostereoscopic 3D screens is being done for some customers and guarded by NDAs).

Pterodactyl. Not sure if you confirmed earlier in the thread but will the system work with nvidia 3d vision which is a must for me. Thanks.

At least in the first version of the box, 1080p@120Hz over a single cable would unfortunately not work, because all inputs and outputs are single link HDMI. Dual link connections would make the box about twice as expensive.

An overview of what will work:

• any device outputting HDMI 1.4a 3D, all mandatory formats, or any usual HDMI 1.3 half-resolution formats
• PC with Nvidia 3D Vision and Nvidia 3DTV Play outputting HDMI 1.4a 3D 1080p@24Hz
• same, HDMI 1.4a 3D 720p@60Hz
• PC with any third party software like DDD or iz3d, supporting dual outputs for up to 2x 1080p@60Hz, or most other usual 3D formats transferable over 1 or 2 single link connections
• all applications natively supporting dual outputs like Stereoscopic Player, up to 2x 1080p@60Hz

Color correction, hotspot reduction and similar features will work for all input signals, all resolutions and refresh rates. Frame interpolation is planned for later date (but all devices will contain re-programmable video processing ICs, therefore functionality can be added later by downloading updated firmware).

We are considering to introduce a professional version too, roughly capable of 4K@60Hz.

Of course, this is all preliminary and not guaranteed.

"Dual link connections would make the box about twice as expensive."

It would only need one dual link dvi input. That is really a vital feature for many of us. Without that we have no choice but polarized with a special screen and 3rd party 3D drivers. How much is twice as expensive? PC Gaming is by far the largest source of 3D content. I think it would be REALLY wise to put out a 3DVision compatible version. You would be alone in that market, and that is a really good place to be.

OK, of course I am grateful for all comments, I'll check if we can redesign the box to have one dual link input (that is also, or in addition to another, HDMI 1.4a compatible input).
Do you perhaps have such a monitor with a dual link input and could you capture it's EDID and send it to me, please?

"Twice" is a reasonable and reliable estimation given by our development team, but I cannot discuss the details; also, final price is not yet determined.

I am attempting to create a photograph using dolby 3d technology for an art installation. I would like to create still image that would be viewed with dolby 3d glasses so that audience members who will be wearing the glasses to view a movie could also see a still image hung on the wall.

I theorized that if I projected stereo images through left and right eye lenses from dolby glasses and then took pictures of the images and muxed them together i might be able to achieve a stereo image. The projected images are affected correctly by glasses when projected to the eye but once photographed are no longer affected by glasses.

Anybody in the forum that might be able to shed some light on tyhe technology for me? Or offer a solution for achieving a dolby 3d photograph?

Better use lenticulars for stills on walls. No need for glasses at all and 3D is very impressive. Not only 2 but several points of view can be used.
http://www.openphotographyforums.com...ead.php?t=2350

I'm not up to speed with using non-certified Nvidia 3D Vision displays with DVI Dual-link.
I thought the Nvidia generic CRT mode only worked on VGA outs.
I'd be cautious about Dual-link DVI. Doing 3D this way is not supported by any open standard, it's the exclusive realm of Nvidia 3D Vision. If Nvidia wants to kill you or force you to pay royalties, they can.

Dual single link DVI... yes but why ? If you do polarised you can get the colour correction done by software, and with your product you'd still be vulnerable to non-synchronized outputs from the PC. (it's the problem I have)

I'd rather stick with standard 3D formats : those are hdmi 1.4 and Display Port.
-> Hdmi 1.4 input is kind of mandatory because it's everywhere on consumer hardware, but it doesn't do 1080p60 per eye (it doesn't do what I want but it's good to have at least a backup solution even if it only supports 1080p BluRays and 720p60 games)
-> Display Port 1.2 input (but hdmi outs) is the technical solution for my PC problems but only ATI graphics cards currently officially support it. Nvidia could easily support it but they aren't motivated at all.

Regarding price...
Even if it's not final, you must have at least a rough idea of target you're heading towards.
My price limit will depend on whether it does only proposition 1 or also proposition 2 I stated above.