Slashdot Mirror

But they're incredibly expensive, and don't handle fingerprints well. (at least, the ones using holographic projectors -- we were told not to even dare getting within 3 feet of the screen, or to go near the projectors that took days to align properly)

Here's a couple of manufacturers of displays, but I can't find the holographic projector one (not sure who made it, just that it exists):

• https://www.dti3d.com/
• http://www.wowvx.com/Index.html

In the 90s I saw a demo of a single-pane eyeglass-free steroscopic display, made by Dimension Technologies in Rochester NY. Here's one of their patents: http://www.patentstorm.us/patents/6040807.html

At the time, CRTs with LCD shutter glasses were cheaper, and better for screen size and resolution. But the eyeglass-free feature was remarkable.

I see the company is still around and still markets 2D/3D displays. http://www.dti3d.com/content/view/22/89/

http://dti3d.com/

At least this company (originally russian) has been making high-quality autostereoscopic 3d LCD displays since forever; we had an old black-and-white LCD hooked up to a 286 luggable in my old lab (we helped to develop the 3d rendering software). I'm under the impression that the new color screens are quite nice and have a fairly wide viewing angle. Note that the DTI's use an "interlaced" LCD system so that no glasses are required -- you just line up an "L" and "R" character on the screen (at least with our old screen), like looking at one of those stupid magic-eye pictures, and voila! 3d.

There are already headgear-free 3D LCDs out there - lots of companies make them now, here's one

They basically work with a lenticular lens which directs alternate lines of the screen in different directions, so one eye sees half the lines and the other sees the other half

DTI3D has been making these things for the last 5 years.

http://www.dti3d.com/

It's not a big new thing...

This has been around for awhile. One company that has been making these is DTI.

http://www.dti3d.com/

No, DTI's display is a parallax barrier design.
Note the physical layout in http://www.dti3d.com/technology.asp/

Also, you'll note their website and business approach is quite professional :)

--
Sal

Writings: saltation.blogspot.com
Wravings: go-blog-go.blogspot.com

I guess those guys must be Jesse Eichenlaub and Arnie Lagergren from DTI. Their displays have been discussed before.

Oh, wait. There's one..

>>all six of the people that use those glasses?

Plus the countless univserity students who use them to do computer graphics, games programming, and games design?

>>Every review I've ever seen complains about eye strain happening very quickly.

On the old models, yes, and only if you had a refresh rate of under 120hz (because at 120hz, its 60hz per eye)

I've actualy used these glasses for gameing, some of my sessions lasting for 5 hours, and never enounterd eye strain or dizzyness or any other ill fated side effect that people make up about this technology.

>>If you did a little research you might find a 3D system that works from LCDs.

Oh, ok, so I trundel down to Dimension Technologies with the $70 that the glasses cost me to go and get a 15 inch 3D LCD... oh wait, no, my $70 is just a bit short of the asking price of $1,700... oops...

Why use the glasses? they are cheap. A rough calculation shows that the glasses are 24.3 times cheaper than one 3D LCD monitor, and in one of the courses listed above, the univeristies would rather choose 24 glasses than 1 LCD...


NeoThermic

Right here.

We experimented with a similar display from Dimension Technologies, Inc.. Here's how it works if you are interested.

It's pretty cool but you don't have much room to move around and we'd get headaches after about half an hour of using it.

We experimented with a similar display from Dimension Technologies, Inc.. Here's how it works if you are interested.

It's pretty cool but you don't have much room to move around and we'd get headaches after about half an hour of using it.

This particular screen technology has been around for a *VERY long time. It was purchasable over three years ago. If it's not popular by now, I'm certainly not holding my breath.

2-19-2000 http://slashdot.org/article.pl?sid=00/02/19/121725 4&mode=flat&tid=137

*And here's a quote from the first comment to the article:
"Interesting side point: The press on this form of 3d vision on their web site dates back to 1994 so it's not exactly cutting edge (unless they've recently undergone a quantum leap forwards and I haven't picked up on this from the site). "--by fingal (49160) on Saturday February 19, @10:33AM (#1259484)

incidentially here is a good article on how these work
http://www.dti3d.com/technology.asp

Dimentions Technologies Incorporated have been selling 3D monitors (without the glasses!) for years. When they first came out they got very favorable reviews, but the major quip was with the price. Well, the prices have come down significantly, and you can get a 15" True 3D flat panel monitor, for $1700, and an 18" for $5000. 32-Bit color, resolutions up to 1024x768 (for the smaller ones), and 1280 x 1024 for the big ones, that's not such a bad deal. Also, it goes from 2D monitor to 3D at the toch of a button. Not bad if you ask me.

Site is here.

I'd like to get excited but its already been done.

Hopefully competition will reduce the time it takes for this to be added to commodity hardware.

We bought a similar LCD monitor for testing at work one and half year ago. It "supports" several viewers at once by alternating between the left and right image in several vertical "beams". There has been several stories about these monitors before.

It works quite well, but it is really a pain in the a** (neck?) to use.

...but they're a little too late...

this is the exact same technology as: dti3d. i have the 15" version. -phae

Dimension Technologies makes products which, by the looks of their technology, are identical to Sharp's "new" breakthrough. DTI's made their first display with this technique years ago, and claims to have several patents. Can anyone show how Sharp is not infringing on DTI's patents?

Dimension Technologies makes products which, by the looks of their technology, are identical to Sharp's "new" breakthrough. DTI's made their first display with this technique years ago, and claims to have several patents. Can anyone show how Sharp is not infringing on DTI's patents?

Dimension Technologies makes products which, by the looks of their technology, are identical to Sharp's "new" breakthrough. DTI's made their first display with this technique years ago, and claims to have several patents. Can anyone show how Sharp is not infringing on DTI's patents?

It seems to me that you wouldn't be able to get true stereoscopic vision from this monitor only a two-layer 2D setup. Is this really any more useful than having 2 monitor's side-by-side? You can read about a true stereoscopic 3D monitor here. This uses an LCD behind a "vertical-blinds"-type lens to allow each eye to only see alternate columns of pixels. So it displays the left eye's image on "even" columns and the right eye's image on "odd" columns. Sounds cool, works on the same principle as those 3D posters at your local theater, and is only around $1500 compared to $6000. It's made my DTI.

Unless I'm horribly mistaken, this claims their cards support Dimension Technologies 3d lcd displays. Their monitors use a single lcd but have special optics that makes alternating columns of pixels visable to each eye.

The company's website: http://www.dti3d.com/.

Pretty shitty, doesn't tell you much. But I can appreciate companies that put more effort in their product than their website. ;)

What about Dimension Technologies Inc. (DTI)? Think theirs is a better solution than layering... Link here, www.dti3d.com.

In this method, two solid and unyielding images are produced for the user to view. These images are merged together, and if viewed by one eye, will appear to be two overlapping images, which don?t quite merge together correctly. However, when viewed with two eyes, autostereoscopy can produce vivid lifelike 3D images.

That's just not an explanation. But, I figure, it's just a review by some graphics fans. So I checked the company's website. (Which barely works. A peek at the image directory got me this. I guess we know they're hosting on a Mac, huh?) Their FAQ, in response to "Q: I am wondering how your display works?" links to http://www.dti3d.com/dev/, which is not especially useful. I downloaded the developer's package. The readme says:

dti_vw libray diretory has source files for our driver.
dti_vw app directory has sample file for how to use our libray in a application program.
Our library is so simple and easy to use.
There for this sample is good enough to know how our library works.
Our library make a application can communicate between a computer and our unit.
If we change our the communication method and way, we will update immediately.

I gotta be honest: This all looks pretty sketchy. Has anybody seen/used one of these? I'm not convinced that this thing is legit. I don't have the skills to be able to read the code to figure out how all of this works. But "view with two eyes" just ain't gonna cut it for this crowd.

-Waldo

In this method, two solid and unyielding images are produced for the user to view. These images are merged together, and if viewed by one eye, will appear to be two overlapping images, which don?t quite merge together correctly. However, when viewed with two eyes, autostereoscopy can produce vivid lifelike 3D images.

That's just not an explanation. But, I figure, it's just a review by some graphics fans. So I checked the company's website. (Which barely works. A peek at the image directory got me this. I guess we know they're hosting on a Mac, huh?) Their FAQ, in response to "Q: I am wondering how your display works?" links to http://www.dti3d.com/dev/, which is not especially useful. I downloaded the developer's package. The readme says:

dti_vw libray diretory has source files for our driver.
dti_vw app directory has sample file for how to use our libray in a application program.
Our library is so simple and easy to use.
There for this sample is good enough to know how our library works.
Our library make a application can communicate between a computer and our unit.
If we change our the communication method and way, we will update immediately.

I gotta be honest: This all looks pretty sketchy. Has anybody seen/used one of these? I'm not convinced that this thing is legit. I don't have the skills to be able to read the code to figure out how all of this works. But "view with two eyes" just ain't gonna cut it for this crowd.

-Waldo

In this method, two solid and unyielding images are produced for the user to view. These images are merged together, and if viewed by one eye, will appear to be two overlapping images, which don?t quite merge together correctly. However, when viewed with two eyes, autostereoscopy can produce vivid lifelike 3D images.

That's just not an explanation. But, I figure, it's just a review by some graphics fans. So I checked the company's website. (Which barely works. A peek at the image directory got me this. I guess we know they're hosting on a Mac, huh?) Their FAQ, in response to "Q: I am wondering how your display works?" links to http://www.dti3d.com/dev/, which is not especially useful. I downloaded the developer's package. The readme says:

dti_vw libray diretory has source files for our driver.
dti_vw app directory has sample file for how to use our libray in a application program.
Our library is so simple and easy to use.
There for this sample is good enough to know how our library works.
Our library make a application can communicate between a computer and our unit.
If we change our the communication method and way, we will update immediately.

I gotta be honest: This all looks pretty sketchy. Has anybody seen/used one of these? I'm not convinced that this thing is legit. I don't have the skills to be able to read the code to figure out how all of this works. But "view with two eyes" just ain't gonna cut it for this crowd.

-Waldo

In this method, two solid and unyielding images are produced for the user to view. These images are merged together, and if viewed by one eye, will appear to be two overlapping images, which don?t quite merge together correctly. However, when viewed with two eyes, autostereoscopy can produce vivid lifelike 3D images.

That's just not an explanation. But, I figure, it's just a review by some graphics fans. So I checked the company's website. (Which barely works. A peek at the image directory got me this. I guess we know they're hosting on a Mac, huh?) Their FAQ, in response to "Q: I am wondering how your display works?" links to http://www.dti3d.com/dev/, which is not especially useful. I downloaded the developer's package. The readme says:

dti_vw libray diretory has source files for our driver.
dti_vw app directory has sample file for how to use our libray in a application program.
Our library is so simple and easy to use.
There for this sample is good enough to know how our library works.
Our library make a application can communicate between a computer and our unit.
If we change our the communication method and way, we will update immediately.

I gotta be honest: This all looks pretty sketchy. Has anybody seen/used one of these? I'm not convinced that this thing is legit. I don't have the skills to be able to read the code to figure out how all of this works. But "view with two eyes" just ain't gonna cut it for this crowd.

-Waldo

If you read the article it explains how it was done. They used a screen in front of the display to generate images that are slightly angled to each eye. Unfortunately you must be a fixed distance from the screen in order for it to work.
Link to how it works

Apparently the revie w in Machine Design says that "The screen uses a liquid-crystal display and an illumination plate. The LCD generates translucent colors while the plate carries light lines or pencil-thin light generators that run the height of the unit and are spaced on a two-pixel pitch. The plate also holds lenticular lenses that direct light at a slight angle. The LCDs are wired so that every other column displays image information intended for a viewer's left eye and the other columns for the right. In the current design, both halves of a stereo pair are displayed simultaneously. Several people can view stereo images at once.".

This sort of makes more sense if you see the diagrams on the page, but I would have thought that it would require you to be pretty much directly in front of the screen and viewing it at a perpendicular angle, (from a certain distance) otherwise you are going to start receiving the wrong information to each eye.

However, once you have it calibrated for your eye seperation, I see no reason why you shouldn't get really strong stereoscopic images. When's the next trade show near Brussels so I can try it out?

Interesting side point: The press on this form of 3d vision on their web site dates back to 1994 so it's not exactly cutting edge (unless they've recently undergone a quantum leap forwards and I haven't picked up on this from the site).