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DepthQ® HDs3D-1 Stereoscopic 3D Projector
Frequently Asked Questions (with answers)

DEPTHQ® HDs3D-1 TECHNOLOGY OVERVIEW

FORMAT

VIEWING



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Answers to Frequently Asked Questions

DEPTHQ® HDs3D-1 TECHNOLOGY OVERVIEW

Q: What is the DepthQ® HDs3D-1 video projector?

A:The DepthQ® HDs3D-1 video projector is a revolutionary lightweight single lens video projector capable of achieving true input & output frame rates of 120Hz at the WXGA resolution of 1280x720. This high frame rate of 60Hz per eye allows DepthQ® to provide a rock solid stereo 3D experience.

To create the 3D, the DepthQ® HDs3D-1 video projector is used with a stereoscopic 3D image source and either A) an infra-red (IR) emitter + liquid crystal (LC) active shutter glasses or B) the DepthQ® Polarization Modulator + a polarization-preserving screen + passive polarized glasses.


Q: Why are active LC shutter glasses and an IR emitter, or passive polarized glasses and a polarization modulator required?

A: These additional technologies are used to target the projector's output to your individual eyes, enabling you to perceive the stereo effect.

The DepthQ® HDs3D-1 video projector displays a time-interleaved stream of left and right images at 120 frames per second. The viewing eyewear in either case is used to alternately block images so that the right eye only sees the right image and the left eye only sees the left.

In the case of active shutter glasses, the eyewear itself receives a wireless signal (typically infra-red, or IR) that synchronizes them with the projector output. The eyes then actively alternate between opaque and transparent at the appropriate moment in time.

In the case of the DepthQ® Polarization Modulator, the modulator (placed in front of the projector) receives the synchronization signal and actively alternates the polarization orientation of light exiting the projector. These polarization-encoded L-R images are then projected onto a polarization-preserving screen, and viewed using inexpensive passive polarized eyewear. Because each eye of the glasses is polarized differently to match the two orientations of light reflecting off the screen, light only passes through one lens at a time.

In both cases, our brain then combines the two images, instantaneously comparing even the smallest differences to allow us to perceive the encoded depth.


Q: Are LC shutter glasses and an IR emitter included?

A: No. Liquid crystal eyewear and infra-red emitters are available from several manufacturers in a variety of configurations and price points, and must be purchased separately. See this page.

Likewise, the DepthQ® Polarization Modulator is a separate purchase.


Q: Does my IR emitter or DepthQ® Polarization Modulator plug in to the projector?

A: No. Your IR emitter or polarization modulator driver typically connects to a 3-pin DIN3 connector on the computer’s graphics card (stereo ready cards). The projector does not have a DIN3 connector.

If your graphics card has an onboard DIN3 connector (NVIDIA FX3700, FX4600, etc.) you will connect your IR emitter or modulator drive electronics directly to the onboard DIN3 connector.

If your graphics card does not have on onboard DIN3 connector (NVIDIA FX1500, FX3800) you may be able to use a stereoscopic breakout cable (VGA to VGA + DIN3). Please see these related FAQ questions.

NVIDIA's 3D Vision emitter connects to a USB port instead of using a DIN3.


Q: What display technology is DepthQ® based on?

A: DepthQ® uses the latest Texas Instruments Digital Light Processing® technology with BrilliantColorTM to produce richer, more vibrant colors and a stunning 2100:1 contrast ratio. DLP® is the world’s only all-digital display solution. DLP® is based on a unique, fast, digital, reflective semiconductor called the Digital Micromirror Device, or DMD.


Q: What is special about the DepthQ® HDs3D-1 video projector?

A: The patented DepthQ® HDs3D-1 video projector is based on an existing InFocus® projector engine design, which has been used in literally hundreds of thousands of projectors.

At Lightspeed’s direction, this engine has been customized to support stereoscopic visualization requirements, particularly frame synchronous output, custom color-sequencing, and refresh rates of 120Hz. This is accomplished at a resolution of 1280x720 and the projector can accomodate 120 unique frames per second at this resolution. Visually, this is roughly equivalent to 1920x1080 60P in 2D. The result is extremely high-quality, flicker-free, high-definition 3D imagery from a single lens projector.

Affordable projected stereo 3D prior to the advent of DepthQ® required two separate projectors that were stacked. Unfortunately set-ups like these too easily introduce asymmetries between eyes that make viewing uncomfortable or even painful. Most notably they must be geometrically aligned, and kept aligned, by a skilled technician. And other differences like L-R synchronization and even color temperature can massively decrease the quality of the experience for the viewer.

Because DepthQ® is a single projector solution, projection symmetry is ensured and professional-quality stereo 3D display becomes very simple to accomplish for any user.


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FORMAT

Q: What stereo 3D format does the DepthQ® HDs3D-1 video projector support?

A: DepthQ® only accepts 3D data in page flip active stereo 3D format at 120 Hz. This is a time-sequential format, ie. L-R-L-R, and is usually generated using a computer with a graphics card which supports Quad Buffered OpenGL Stereo. Most NVIDIA Quadro cards support this. We often recommend the Quadro FX3700 card.

DepthQ® is then used in conjunction with liquid crystal shutter eyewear to create the stereo 3D effect in the mind of the viewer.

Alternatively, the HDs3D-1 can also be used with the DepthQ® Polarization Modulator + a polarization preserving screen, and viewed using inexpensive passive polarized eyewear.


Q: Can I plug my 3D Blu-Ray in via HDMI in and watch 3D movies?

A: No. The projector's HDMI input is HDMI 1.3. 3D Blu-Ray players require HDMI 1.4 (see the above question for more detail).


Q: Does DepthQ® support 3D composite video data from a standard DVD or VHS player?

A: No (see this previous question for more detail).


Q: Can the projector decode side-by-side or above-below 3D?

A: No. The projector's HDMI input is HDMI 1.3, not 1.4. These formats are part of the HDMI 1.4 specification, thus the projector cannot itself process them (see this previous question for more detail).

However, if you have access to side-by-side or above-below movies on your computer, you can play these back and drive the projector properly using our free DepthQ®PlayerTM LITE software.


Q: Your specifications state that DepthQ® has 2 VGA inputs. Does this mean I supply Left to one and Right to the other?

A: No. The projector does have two VGA inputs. However, this is to allow you to connect two different VGA signal sources to the projector and switch between them. Either input can be 3D or 2D, but the two do not combine to create the stereo, nor can you display signals from both inputs at the same time.


Q: Can DepthQ® operate in normal 2D mode?

A: Yes. All functions and inputs are operational at 60 Hz. Some functions are limited at 120Hz.


Q: What is the DepthQ® HDs3D-1 video projector’s resolution and aspect ratio?

A: 1280x720 (16:9 aspect ratio).


Q: Can DepthQ® sync to any other resolutions and aspect ratios?

A: Yes, in 3D mode, DepthQ® will also sync to 1024x768 and 800x600 inputs (4:3 aspect ratios) at 120Hz, in addition to 1280x720 (16:9).

In 2D, DepthQ® will synch to VGA (640x480), SVGA (800x600), XGA (1024x768), SXGA (1280x1024), SXGA (1400x1050), WXGA (1280x720), WXGA+ (1440x900), plus NTSC, PAL, SECAM, 480i, 576i, 480p, 576p, 720p and 1080i.


Q: If DepthQ® will synch to 1024x768, why can't I use 1280x768?

A: The actual maximum vertical resolution is 720 pixels. When DepthQ® synchs to a 1024x768 input, it smoothly scales the input proportionally to fill those 720 pixels.


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VIEWING

Q: Isn't "HD" 1920x1080?

A: Actually, high-definition (HD) is any display with resolution exceeding standard definition (SD), which in the US is 640x480. Displays of 1024x768 are considered HD. Technically speaking, our first DepthQ® projector (introduced in 2005) at 800x600 could have been considered HD. In fact, many were quite surprised at the level of quality achieved at this resolution. Nonetheless, we considered it SD and marketed it as such.

However, the new DepthQ® HDs3D-1 Projector, with a resolution of 1280x720 per eye, rightfully earns the "high-definition" moniker - not only because 720P is a widely utilized broadcast standard roughly equivalent to 1080i in bandwidth, but because the projector can ingest and output twice the normal frame rate. At 120 unique frames per second, the total potential amount of data presented to your visual system by the DepthQ® projector is actually roughly equivalent to the highest 2D high-definition standard to date: 1080 60P. As a point of comparison, Blu-ray® players only currently output 1080 24P.


Q: Why does 1280x720 look so good on the DepthQ®?

A: Background: In the early days of broadcast HD, the two formats competing for the HD standard were 1280x720 at 60 frames per second (720 60P) and 1920x1080 at 60 fields per second (1080 60i). The "P" stands for progressive, meaning a full frame is displayed every 60th of a second; while the "i" stands for interlaced, meaning only half of the information - using every other line - is displayed in the same time frame. Subsequently, 1280x720 60P equates to 921,600 pixels displayed every 60th of a second; while 1920x(1080/2) 60i equates to 1,036,800 pixels displayed in that same 60th of a second. This reveals that the two competing formats are actually very close in terms of the actual amount of data being presented to the visual system within the same time interval.

Sports broadcasters ultimately selected 720P over 1080i because it displays 60 full frames per second, with none of the motion artifacts associated with interlaced frames. In the end both formats were included in the HD broadcast standard; but when motion and detail together are critical, 720P is preferred over 1080i.

The DepthQ® HDs3D-1 projector is actually displaying 1280x720 at 120P, which is 60P per eye. The brain integrates these two views into a higher resolution result than either eye sees separately. This equates to 1,843,200 unique pixels per fused stereo pair, every 60th of a second - nearly twice the bandwidth of 1920x1080 60i, and roughly equivalent to 1920x1080 60P.


Q: What screen size can I use for any given throw distance?

A: The DepthQ® HDs3D-1 Video Projector has a zoom lens, thus there is a maximum and a minimum screen size attainable for any given throw distance. Please refer to the following table for approximate values.

You can calculate the approximate minimum and maximum screen widths or screen diagonals for any throw distance not included in the table below by dividing your throw distance by one of the four throw ratios provided (htr = horizontal throw ratio; dtr = diagonal throw ratio).

Image Size as a Function of Throw Distance
Horizontal Image Size = Distance / htr
Diagonal Image Size = Distance / dtr (diagonal based on native 16:9 aspect ratio)


Distance to Screen Min Horizontal Image Size
htr(min) = 1.81
Max Horizontal Image Size
htr(max) = 1.46
Min Diagonal Image Size
dtr(min) = 1.58
Max Diagonal Image Size
dtr(max) = 1.27
2.5' : 76.2cm 16.6" : 42.1cm 20.6" : 52.3cm 19.0" : 48.3cm 23.6" : 60.0cm
5' : 1.52m 33.1" : 84.2cm 41.2" : 104.5cm 38.0" : 96.6cm 47.2" : 119.9cm
10' : 3.05m 66.26" : 1.68m 82.3" : 2.09m 76.0" : 1.93m 94.4" : 2.40m
15' : 4.57m 99.4" : 2.53m 123.5" : 3.14m 114.0" : 2.90m 141.7" : 3.60m
20' : 6.1m 132.5" : 3.37m 164.6" : 4.18m 152.0" : 3.86m 188.9" : 4.80m


Q: What throw distance do I need to fill any given screen size?

A: The DepthQ® HDs3D-1 Video Projector has a zoom lens, thus there is a range of distances that will accomodate any given screen size. Please refer to the following tables for approximate values. For your convenience, two tables are provided - one with "friendly" screen widths, the other beginning with familiar diagonal screen sizes commonly used by LCD and Plasma monitors.

You can calculate the approximate minimum and maximum throw distance for any horizontal or diagonal screen size not included in the tables below by multiplying your screen size by one of the four throw ratios provided (htr = horizontal throw ratio; dtr = diagonal throw ratio). Note: Because focus and focal length both affect image size, the relationship between size and distance with respect to the zoom is actually non-linear, but this will at least get you very close.

Throw Distance as a Function of Horizontal Screen Size
Throw Distance = Horizontal Screen Size * htr

Horizontal Screen Size Minimum Throw Distance
htr(max) = 1.46
Maximum Throw Distance
htr(min) = 1.81
16.6" : 42.1cm No Focus 2.5' : 76.2cm
2' : 61cm 2.9' : 88.9cm 3.6' : 1.1m
3' : 91.4cm 4.4' : 1.33m 5.4' : 1.66m
4' : 1.22m 5.8' : 1.78m 7.2' : 2.21m
5' : 1.52m 7.3' : 2.22m 9.1' : 2.76m
6' : 1.83m 8.75' : 2.67m 10.9' : 3.31m
7' : 2.13m 10.2' : 3.11m 12.7' : 3.86m
8' : 2.44m 11.7' : 3.56m 14.5' : 4.42m
9' : 2.74m 13.1' : 4.0m 16.3' : 4.97m
10' : 3m 14.6' : 4.44m 18.1' : 5.52m
11' : 3.35m 16.0' : 4.89m 19.9' : 6.07m
12' : 3.66m 17.5' : 5.33m 21.7' : 6.62m
13' : 3.96m 19' : 5.78m 23.5' : 7.18m
14' : 4.27m 20.4' : 6.22m 25.4' : 7.73m


Throw Distance as a Function of Diagonal Screen Size
Throw Distance = Diagonal Screen Size * dtr
(diagonal based on native 16:9 aspect ratio)

Diagonal Screen
Size
Minimum Throw Distance
dtr(max) = 1.27
Maximum Throw Distance
dtr(min) = 1.58
19" : 48.4cm No Focus 2.5' : 76.2cm
21" : 53.3cm 2.2' : 67.8cm 2.8' : 84.2cm
32" : 81.3cm 3.4' : 1.03cm 4.2' : 1.28m
42" : 1.07m 4.5' : 1.36m 5.5' : 1.68m
50" : 1.27m 5.3' : 1.61m 6.6' : 2.0m
56" : 1.42m 5.9' : 1.81m 7.4' : 2.25m
65" : 1.65m 6.9' : 2.1m 8.6' : 2.61m
72" : 1.83m 7.6' : 2.32m 9.5' : 2.89m
85" : 2.16m 9.0' : 2.74m 11.2' : 3.41m
8' : 2.44m 10.2' : 3.1m 12.6' : 3.85m
10' : 3.05m 12.7' : 3.87m 15.8' : 4.81m
12' : 3.66m 15.3' : 4.65m 18.9' : 5.77m
14' : 4.27m 17.8' : 5.42m 22.1' : 6.74m
16' : 4.88m 20.3' : 6.2m 25.25' : 7.7m



Q: What viewing distances do you recommend?

A: Based on the size and density of cones in the fovea centralis (the highest resolution area of the retina), the smallest resolvable detail humans with 20/20 vision can generally see under optimal conditions is contained within approximately 1 arc-minute of angle, or 1/60th of one degree. Any details smaller than that simply blend together. Think of it as biological anti-aliasing.

From this data, a little trigonometry provides us with a simple rule of thumb: The viewing distance at which those of us with 20/20 vision maximize natural blending without any perceived loss of resolution = Pixel Width / .0003. This equates to 1 meter of distance for every .3 millimeters of pixel offset (pitch); and this is true for any picture-element-based display (including printing). Beyond this distance we actually begin to throw away display resolution.

This is another reason why 1280x720 or even 800x600 can look better than we think it should. Namely, picture quality is not determined by resolution alone - for when viewed from the appropriate distance, no individual pixels will be perceived at all.

Of course, in practice human acuity varies widely from this theoretical high mark, especially in the darker environments in which we tend to watch projected images (acuity decreases as pupil diameter increases). Subsequently, at the other end of the spectrum we have observed that pixels begin to adequately blend approximately one screen width distant from the DepthQ® HDs3D-1 Projector.

These two distance calculations provide us with our maximum and minimum recommended viewing distances, based on display width:

Lightspeed Recommended Viewing Ranges
for the DepthQ® HDs3D-1 Stereoscopic Video Projector


Display Width (feet) 2' 4' 6'> 8' 10' 12' 14'
Optimal Viewing Range 2' to
5' 4"
4' to
10' 9"
6' to
16' 1"
8' to
21' 6"
10' to
26' 10"
12' to
32' 3"
14' to
37' 7"

Display Width (meters) 0.6m 1.2m 1.8m 2.4m 3m 3.7m 4.3m
Optimal Viewing Range 0.6 to
1.6m
1.2 to
3.3m
1.8 to
4.9m
2.4 to
6.5m
3 to
8.2m
3.7 to
9.8 m
4.3 to
11.5m



Q: Are there any special requirements for the projection screen?

A: No. While the best results will be obtained using an actual projection screen, any light-colored surface can act as your screen in a pinch - even an ordinary wall.

However, if your ambient light levels are expected to be high, we recommend an ambient-light-rejecting screen, such as the Supernova CoreTM Front Projection Screen as featured in our booth at Siggraph 2008:

The DepthQ®-WXGA Projector in action using front-projection

DepthQ®-WXGA Video Projector on Supernova CoreTM front-projection screen under high ambient light (tradeshow lighting).


Another option for high-ambient light is to consider using a rear-projection screen, as pictured below:

Original DepthQ® projector in action using rear-projection

Original DepthQ® projector in action using rear-projection

The original 800x600 InFocus®DepthQ® 3D Video Projector in action under extremely high ambient light (tradeshow lighting).

Please note, however, that if you intend on combining a DepthQ® Polarization Modulator with the projector in order to use passive polarized glasses, you will require a polarization preserving screen, such as those manufactured by Stewart Film Screens.

Lightspeed's President Chris Ward with the new DepthQ<sup>®</sup> HDs3D-1 projector, combined with the DepthQ<sup>®</sup> Polarization Modulator and a Stewart silver 3D screen at Siggraph 2010

Lightspeed's President Chris Ward with the new DepthQ® HDs3D-1 projector, combined with the DepthQ® Polarization Modulator and a Stewart silver 3D screen at Siggraph 2010.


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PURCHASING

Q: How much does the DepthQ® HDs3D-1 Video Projector cost?

A: US$2995 - half the cost of our 2nd-generation model - the DepthQ-WXGA. We also offer a 10% educational discount for schools.


Q: What is the Warranty period?

A: Limited warranty periods are as follows:

Parts (Excluding Lamps): Five years from date of product shipment.

Labor: Two years from date of product shipment.

Original Lamp Limited Warranty Period: Six months from date of product shipment.

Replacement lamps for the DepthQ HDs3D-1 will have a six month Limited Warranty from date of lamp proof-of-purchase.

Accessories: 90 days from date of product shipment.


Q: Can I purchase an extended Warranty?

A: Yes. After-purchase extended warranties for both the projector and the lamp are available directly from Lightspeed or from the InFocus Store.

One Year Service Protection Plans (Product: $149.00 Lamp: $49)


Q: What are the shipping dimensions and shipping weight?

A: DepthQ® HDs3D-1

- Shipping Dimensions: Height: 9.0 in (22.9 cm) Length: 12.8 in (32.5 cm) Width: 16.5 in (41.9 cm)

- Shipping Weight: <14.3 lbs (6.48 kg)


Q: How much will shipping cost?

A: The following rates are approximate shipping costs and are for example only. Actual rate will vary based on final shipping destination. Rates apply only to projectors and do not include glasses.

Standard USA domestic order, 2-5 business days ARO,(UPS Ground) $25.00

Please contact us for an international freight quote. However, please note that VAT and/or customs duties are additional, and vary widely from country to country. We recommend you contact your local branch of your preferred shipping company (UPS, FedEx, etc.) for an estimate.


Q: Where can I get accessories?

A: A large variety of accessories are available. Please visit our accessory page for details.


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DOCUMENTATION


Q: Where do I find manuals and documentation?

A: Please visit our support page for a variety of documentation.


Q: Can I still access a manual for the original DepthQ® 3D Projector, the DQ-3120?

A: Yes, you can download a PDF of the DQ-3120 manual, which was based on the InFocus X2, here. This manual covers general operation. Please note: since there are no specific stereo adjustments on this projector, there is no information specific to stereo operation.


Q: Can I still access a manual for the DepthQ®-WXGA 3D Projector?

A: Yes. Please visit our support page for a variety of documentation on the DepthQ®-WXGA, which was based on the InFocus X2.


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LAMP

Q: Is there anything special about the DepthQ® lamp?

A: No, it is a standard InFocus lamp. But with a maximum output of 2700 lumens in 3D mode, and 3500 lumens in 2D mode, DepthQ® delivers superior brightness at work or anywhere else.


Q: How many hours of operation can I expect to get before replacing the lamp?

A: The long-life lamp can shine for an incredible 4000 hours (Eco Mode), or 3000 hours in Standard Mode.

Actual lamp life will vary based on operating modes and ambient environment. Conditions that affect lamp life include temperature, altitude and rapidly switching the projector on and off.


Q: What is the lamp's Warranty period?

A: The original installed lamp has a six month Limited Warranty from date of shipment. Replacement lamps have a six month Limited Warranty from date of lamp proof of purchase.


Q: Can I purchase an extended lamp Warranty?

A: Yes. An after-purchase one year extended warranty for the lamp is available directly from Lightspeed or from the InFocus Store.

One Year Lamp Warranty $49.00


Q: Where can I get a new lamp?

A: Lamps can be purchased directly from Lightspeed or from the InFocus Store.

Replacement Lamps $299.00


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APPLICATIONS

Q: What is stereo 3D Visualization?

A: Stereo 3D/VR (virtual reality) is the process of interacting with a computer simulation in a three-dimensional virtual world. These worlds can be as realistic as an aircraft interior or as abstract as a protein molecule. In principal, any true 3D computer world, for example 3D games, can be transformed into a stereoscopic 3D image.


Q: What makes stereoscopic visualization so valuable?

A: The public's longstanding attraction to stereo 3D is undeniable. There is an inherent excitement that surrounds a 3D presentation. Additionally, scientific studies have proven conclusively that viewing in 3D results in deeper impressions, better retention of information, and a more memorable experience.

For a more in-depth examination of this process look here.


Q: What markets currently use stereo 3D Visualization?

A:

Government and Defense:
Aerospace/Military
Digital Battlespace
NASA
GIS/Geographic Information Systems
Resource Management:
Oil Exploration/Extraction
Mining
Timber/Habitat Management
Subsurface 3D Seismic
Life Sciences:
Pharmaceutical Research
Molecular Modeling
Medical Devices
Surgical Planning/Stereo Microscopy
Human Modeling (3D ultrasound)
Manufacturing CAD/CAM:
Virtual prototyping
Automotive/Truck/Heavy Equipment
Aerospace/Commercial
Architectural/Engineering/Construction
Consumer Products
Education and Entertainment:
University Research
Location Based Entertainment
Museum Attractions
3D Video Games
Training:
Law Enforcement/Weapons training
Hazardous Material Removal
Military Tactics
Flight Simulators


Q: What software applications support stereoscopic visualization?

A: There are a growing number of professional applications which natively support the page flip active stereo stereoscopic visualization format compatible with the DepthQ® projector. Additionally, some applications support stereo 3D via custom plug-ins. To see if your application is supported, please check with your application vendor. Here's a list of some example applications.

Type

Product

Company

CAD/CAM/CAE

CATIA V5R13

Dassault Systemes

CAD/CAM/CAE

SolidWorks

SolidWorks Corporation

CAD/CAM/CAE

UGS Teamcenter Visualization Mockup

UGS PLM Solutions

CAD/CAM/CAE

Rhinoceros

NcNeel

GIS / OIL & GAS

Erdas Imagine

Leica Geosystems

GIS / OIL & GAS

Landmark GeoProbe

Landmark

ArcGIS / Direct Data QA
& 3D Feature Digitizing

PurVIEW

I.S.M. International Systemap Corporation

Molecular Imaging

Accelrys Discovery Studio Visualizer 2.0

Accelrys

Software Development

Open Inventor

TGS

Visualization / VR

Amira

TGS

Visualization / VR

EON Studio 4.0

EON Reality Inc

Visualization / VR

Opus Realizer Opus Studio

Opticore

Visualization / VR

Rtre Plugin 3ds max/VIZ

Cubispace

VRML / VR Viewer

Cortona VRML Client 4.2

Parallel Graphics

3D Games

NVIDIA 3D Vision

NVIDIA Corporation

Universal Drivers

more3DSTEREO

more3D GmbH



Q: How do I enable stereo output in SolidWorks?

A: How to download the SolidWorks stereo driver:
Go to the SolidWorks web site

Go to the "Graphics Cards and Systems" page
(http://www.solidworks.com/pages/services/VideoCardTesting.html)

Select "NVIDIA" from the venders list

Select SolidWorks 2005 from the version list

Click the "Show Passing" button.

Find any card that has the picture of Blue and Red glasses and click "View Notes"
(the FX1100 for example - http://www.solidworks.com/pages/popups/videonotes.html?ID=1221)

In the popup, click the link "SolidWorks stereo Add-in"

(http://www.solidworks.com/downloads/videocarddriver/stereo/stereosw.zip)


Q: Does Pro-E support stereo output?

A: No, not at this time.


Q: Can I play stereo movies, videos, or pre-rendered visualizations on DepthQ®?

A: Yes. Movies that have been filmed using two cameras or pre-rendered computer graphic animations can be played back on your computer and viewed with DepthQ®. Please see our DepthQ®PlayerTM product page for details.

Please note that DepthQ® can not be driven with 3D Blu Ray players. (Please see this previous question for more detail.)


Q: How do I take a CGI project that is stereoscopic and project it using this system?

A: Unless your rendering software can render both eyes into a single stereoscopic format, you will need to render your left and right eyes separately, typically as separate Left and Right image sequences, and then concatenate and encode the two image sequences into a single movie file using compositing software.

There are many different ways you can choose to encode your movie; however, for the highest quality we suggest using the "Above/Below Full" format (to learn about other possible formats you can download our DepthQ®PlayerTM Manual and refer to the section entitled "DepthQ® OpenGL Renderer Properties Dialog | Renderer Dialog Control Tabs | Input Movie Control Tab").

To encode using the Above/Below format, import your final rendered left and right eye image sequences into your favorite compositing software. Then simply create a canvas that is double high (e.g. if each eye was rendered at 1280x720, your canvas should be 1280x1440). You then position your left eye in the top half of your canvas and your right eye in the bottom half. At this point you export using your favorite codec as a single movie file. Information regarding various output filters and codecs can be found in the DepthQ®PlayerTM Manual in the section entitled "Movie Formats, Filters & Codecs".

Finally, for playback using a stereoscopic media server like the free DepthQ®PlayerTM LITE, you select "Above/Below Full" as your input and "OpenGL HW" for your output mode. As with input formats, there are many different stereoscopic output modes you can choose from. These depend for the most part upon your playback hardware (again reference the DepthQ®PlayerTM Manual in the "Output Movie Control Tab" section to learn more about each of them). However, "OpenGL HW" is the correct mode for playback on the DepthQ® HDs3D-1 projector.

Please Note: The above playback instructions are for computer systems using NVIDIA's Quadro graphics cards. Specific instructions on how to use the DepthQ® OpenGL Renderer can be found here. If you have an NVIDIA 3D Vision system with a GeForce graphics card, you will run DepthQ®PlayerTM in DirectX mode, and you will not choose an output mode. Specific instructions on how to use the DepthQ® DirectX Renderer can be found here.

Remember, to properly support the projector you will need to have set your desktop to 1280x720 resolution at 120Hz, and have your graphics card properly configured for stereoscopic output. And of course your computer's hardware will need to be up to the task. You can read more about our system recommendations here.


Q: Can I play video games in stereo 3D?

A: Yes. Many PC video games can now be played in stereoscopic 3D. The 3D is created via a specialized game driver for your graphics card, along with compatible 3D display devices. One leading 3D gaming solution is available from NVIDIA, and is used in combination with certified '3D Vision Ready' display devices like the DepthQ® HDs3D-1 projector, plus NVIDIA's new 3D Eyewear.

To learn more about this exciting new form of immersive entertainment
visit the NVIDIA 3D Vision web site.

Learn more about NVIDIA 3D Vision Ready®
Products carrying the NVIDIA® 3D VisionTM Ready Logo are designed and tested to ensure seamless compatibility with NVIDIA 3D Vision and deliver the best quality, most immersive 3D experience possible.


Q: Is it necessary to download or purchase DepthQ®PlayerTM to play
video games with the projector?


A: No. The 3D for PC video games is created in realtime via a specialized game driver you must acquire for your graphics card (like the NVIDIA 3D Vision solution - see previous question). DepthQ®PlayerTM is a professional-level stereoscopic media server expressly designed for the playback of pre-recorded or pre-rendered 3D media.


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MISCELLANEOUS QUESTIONS

Q: Why can't I use any standard video projector?

A: Standard video projector output engines are internally limited to 60 Hz refresh rates and most do not synchronize to the incoming signal. Those that can by chance synchronize to the incoming signal at 60 Hz flicker unacceptably in 3D, providing only 30 Hz refresh to each eye. Some projectors will sync to 85 Hz, but the amount of flicker is still below the threshold where it is tolerable for any length of time. Synchronizing at 120 Hz provides 60 Hz refresh per eye, and is thus rock-solid.


Q: Will DepthQ® turn my 2D content into stereoscopic 3D?

A: No. The projector cannot change 2D into 3D. The projector must be driven with an application that can playback or create true 3D stereoscopic images.


Q: Can my laptop drive the DepthQ® in stereoscopic 3D?

A: Yes. The DepthQ® HDs3D-1 is compatible with NVIDIA 3D Vision, which is now running on many laptops. This system drives its infra-red emitter using a USB-connected emitter - thus does not require a DIN-3 connector,

If you have a GeForce go here to see if your laptop's graphics card will work.

If your laptop has a Quadro go here.

If you wish to drive the projector with your laptop but without using 3D Vision, unfortunately the answer is 'not yet' - for the most part:

There are some notebook-specific graphics cards on the market with mobile Quadro chipsets that support Quad-Buffered OpenGL Stereo, but the problem is they have no way to get the stereo sync signal out of the notebook and into the IR emitter (which signals the LC glasses).

Specifically, since notebook PC's don't have the 3 pin stereo connector, you need to be able to get the stereo sync out of the VGA port. This is a common method which has been supported for a long time by NVIDIA drivers. However, recently NVIDIA has removed this feature from their drivers. Thus, any new graphics chipsets which require newer drivers cannot supply the stereo signal via the VGA port.

Therefore, at this time we recommend a small form-factor PC (like a Shuttle) with a normal Quadro FX3700 graphics card.

That said, the one solution of which we are aware is to use an older Dell M90 laptop with the NVIDIA Quadro FX3500M card (especially suitable for CAD, digital image-, video editing and scientific visualizations), combined with the FX3500M_v92.77 driver - a 'tried-and-true', stable driver which still has the "use shutter glasses" option, and is still available on Dell's Website.

Theoretically, this same driver could enable stereo 3D with the FX1500M and the FX2500M on the M90, not just the FX3500M. Please drop us a line if you find this to be true.


Q: Can my Mac Pro drive the DepthQ® in stereoscopic 3D?

A: We have not directly tested this, but have heard it works, providing you have an application that natively supports page-flip stereo (like PyMol, for instance). However, you must use an NVIDIA Quadro card that has a 3-pin stereo sync connector on the card. The choices of NVIDIA cards for the Mac are limited, but they are outlined here.

Of the compatible cards, NVIDIA makes a Quadro FX4800 for Mac which does have the 3-pin stereoscopic sync connector (DIN). This card is probably your best bet.

Please drop us a line with your experience in this matter, as Mac-compatible quadros with DIN connectors are relatively young.


Q: Is DepthQ® easy to setup and use?

A: DepthQ® is designed for easy setup and use. Hookups are simple with color-coded connections. Get started right away with intuitive keypads and menus that deliver one touch operation, so there’s no need to refer to the user manual for common tasks. For 3D viewing just plug in the 3D emitter and put on your 3D glasses. It's even easy to carry: at a mere 6.9 lbs (3.13 kg), DepthQ® is super-portable.


Q: Can I invert the projected image?

A: Yes. DepthQ® can be used in any standard projection mode: front, rear, and ceiling mount. A simple menu control allows the user to flip the projected image appropriately. (Rear projection additionally requires the user to switch the L/R signal in either the glass emitter or in the OpenGL software driver.)


Q: Can I mount the DepthQ® projector on its side or vertically?

A: Yes. But as the projector is not specifically designed to operate in this fashion, you will void either the lamp or the projector warranty, or both (depending upon how you proceed).

Problem 1: The bulb in the projector wants to sit with its factory-installed orientation to the ground. This orientation optimizes bulb life only when the projector is sitting on a table or is mounted on the ceiling.

Rotating the projector either vertically or such that it sits on its side does not maintain that desired lamp orientation; and thus without reorienting the lamp, will result in a shorter bulb life.

When mounting the projector on its side, it is simply not possible to re-orient the lamp to avoid this. When mounting the projector vertically (projecting up or down), it is possible to take the lamp apart and re-orient it (rotate it 90 degrees) such that the proper factory-installed orientation is achieved - but it will take some effort. In either case this will void the warranty on the bulb.

Problem 2: An even more dangerous possibility is that by mounting the projector in this fashion you also block the air vents. This will cause your projector to rapidly overheat and fail catastophically. Projector and/or bulb failure due to blocked air vents is not covered by your warranty.

If you are going to proceed anyway, at the very least you will need to ensure the air vents are not obstructed. As long as you do not block the air vents, you can turn the projector on its side or point it straight up or down without re-orienting the bulb as long as you don't mind assuming the risk of replacing the lamp sooner than you would under normal operating circumstances.


Q: What power modes does DepthQ® support?

A: DepthQ® has an auto-switching power supply and 100V – 240V at 50 –- 60 Hz.


Q: What companies were involved, and how did the DepthQ® HDs3D-1 projector come about?

A: Three companies were involved in the creation of the DepthQ® HDs3D-1 projector: Lightspeed Design, Inc., InFocus Corporation, and Texas Instruments, Inc.

Building on the “first to market” success of the original standard-definition InFocus®DepthQ® 3D projector (introduced in 2005), and the DepthQ®-WXGA 3D projector (introduced in 2008), Lightspeed Design again worked with industry innovator InFocus Corporation to improve upon the design. The new DepthQ® HDs3D-1 projectors provide HDMI 1.3 digital input with increased brightness, and incorporate Lightspeed’s patented technologies with InFocus’ proven reliability, providing our most discerning clientele with bright and clear high resolution stereo 3D at an even more affordable price.


Q: Who uses DepthQ® 3D projectors?

A: Fortune 500 companies, governments, major universities from Beijing to Munich, Hollywood’s top filmmakers, and R&D labs across the globe have all embraced DepthQ®’s unique combination of premium 3D visualization and affordable price.

Our clients represent a wide variety of industries, all of whom place a huge importance on stereo 3D visualization. Without exception they’ve been amazed at the value the DepthQ® 3D projector has offered for the price. The new DepthQ® HDs3D-1 projector raises the bar even higher.


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About Lightspeed Design, Inc.
Lightspeed is one of the world’s premiere designers of stereoscopic 3D presentations and software technologies, with considerable technical expertise in projection, optics and electronics. Lightspeed has proven expertise in 3D projection, systems design & installation, and software development. Clients include Pfizer, Intuitive Surgical, Microsoft, Harvard & Munich Universities, US Army, NASA, JPL, DreamWorks SKG and Walt Disney Animation.

About InFocus Corporation
InFocus is the industry pioneer and a global leader in the digital projection market. Backed by more than 20 years of experience and innovation in digital projection, as well as 150 patents, InFocus is dedicated to setting the industry standard for large format visual display. The company is based in Wilsonville, Oregon with operations in North America, Europe and Asia. InFocus is listed on NASDAQ under the symbol INFS. For more information, visit the company’s website at www.infocus.com.

About Texas Instruments, Inc.
Texas Instruments develops analog, digital signal processing, RF and DLP® semiconductor technologies that help customers deliver consumer and industrial electronics products with greater performance, increased power efficiency, higher precision, more mobility and better quality.

DepthQ® is exclusively distributed by Lightspeed Design, Inc.

InFocus and Lightspeed reserve the right to alter product offerings and specifications at any time without notice.

DepthQ is a trademark of Lightspeed Design, Inc. InFocus is a registered trademark of InFocus Corporation or its subsidiaries in the United States and other countries. Digital Light Processing, DLP, and the DLP medallion are trademarks of Texas Instruments, Inc. NVIDIA is a registered trademark of NVIDIA Corporation. All other trademarks are used with permission or are for identification purposes only and are the property of their respective companies. All rights reserved.


Learn more about Texas Instruments' Digital Light Processing®

DepthQ® is the stereoscopic 3D technology brand of Lightspeed Design, Inc.
© Copyright 2014 Lightspeed Design Inc. All Rights Reserved.