JVC DLA-RS15U - Reference Series Home Cinema... Installation guide

High Performance
Stereoscopic Methods for 3-D
Viewing using DILA Projectors
Rod Sterling
JVC North America R&D Center
www.jvcdig.com

3AUG2005 Rod Sterling Siggraph2005 2
Agenda
• Requirements for Stereoscopic Viewing
• Types of Stereoscopic projection
• Advantages of each type
• Efficiency of each type
• JVC Stereoscopic Projection Systems
• Credit and thanks

3AUG2005 Rod Sterling Siggraph2005 3
Key to Stereoscopic viewing
• The key to any 3-D system, is of course,
“CONTENT”, but the projection system
should enhance the content, not add
artifacts to take away from the true
experience.
• True 3-D effect requires high fidelity to
“fool” your brain into thinking the image is
three dimensional.

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3-D Stereoscopic Projection
High Fidelity Viewing Requirements
• Key requirements
– Lack of projector added artifacts
• Pixel structure
• Video noise
• Flashing due to frame rate
• Black level
• Brightness
• Color

3AUG2005 Rod Sterling Siggraph2005 5
3-D Stereoscopic Projection
• Key requirements
– Good left/right eye extinction ratio
• Should be >100:1
– Optical quality screen
• Front or rear, low gain,
– Easy to wear glasses
• Light weight
• Easy to see through
• Feel like not there
• Large field of view

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Types of Stereographic Projection
•Active
– May be one or two projectors
– Requires synchronous shutter glasses
• Passive
– Maybe one or two projectors
– Polarization type
•Circular
•Linear
– Anaglyphic
• Simple Red/Blue
•Infitec
®

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Active System
• One projector approach
– Requires 2x frame rates >120Hz
– Frame double to eyes
• Active glasses each person
• LC Shutter on projector
• Two projector approach
– Fakespace Beacon system
• Duty cycle <50% for each system
• Non-polarizing screen required

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Passive System
• Polarization types
– Linear – high extinction ratio, head movement
dependant
– Circular – lower extinction ratio, head
movement invariant
• Anaglyphic type
– Infitec® - Highest extinction ratio, head
movement invariant, screen independent

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Advantages of each Method
Method Ext Ratio Head
movement Screen Glasses Cost other
Active >100:1 invariant Invariant high batteries
Passive
Linear >250:1 Strong Polarizing Required Low
Passive
Circular >100:1 Invariant Polarizing Required Mid High
Efficiency
Passive
Infitec®>1000:1 Invariant Invariant Mid Need
color
correction

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3-D Efficiencies and Crosstalk
Transmission Crosstalk
method Electronic / timing Filter glasses net eff CR extinction Ratio
Active
single CRT or DLP 0.45 0.55 0.65 0.16
2 DILA (beacon) 0.45 0.9 0.65 0.26
Passive
2 CRT or DLP-Polarization 1 0.45 0.84 0.38
2 CRT or DLP-Infitec 0.66 0.45 0.9 0.27
2 LCD Polarization 1 0.7 0.84 0.59
2 DILA-circular 1 0.7 0.84 0.59 50 0.0200
2 DILA-circular ColorLink 1 1.05 0.86 0.90 120 0.0083
2 DILA-linear 1 0.88983 0.73 0.65 250 0.0040
2 DILA-Infitec®0.7 0.45 0.85 0.27 1000 0.0010

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What is the best system
• Most systems are determined by the
overall system requirements.
–Cost
– Screen types available
– Head movement
– Brightness requirements
– Ambient conditions
– Performance requirements

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Active system using 2 DILA
projectors and LC Shutters
Beacon system Fakespace

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HD-2K Circular Polarization
• HD-2K DILA projector
– 1920x1080 native
resolution, 92%
aperture ratio
– >2000:1 CR
– DVI input
– Internal broadband
circular polarizer
• Extinction ratio >120:1
– Linear option
• Extinction ratio >350:1

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Internal Circular Polarizer
• No external hardware
required
• No alignment required
• High efficiency, 105%
• Can be applied to all
models

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JVC QX1
• QX1 DILA Projector
– 2048x1536 native
resolution
– >2500:1 CR
– 7000 Lumens
– 94% aperture ratio
– HD-SDI/DVI input
– Internal Infitec®filter
method
• Extinction ratio >1000:1

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Infitec®Filter System
QX1 sn 49 B no glasses
0
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
350 400 450 500 550 600 650 700 750 800
Left eye
0
0.00005
0.0001
0.00015
0.0002
0.00025
0.0003
0.00035
350 400 450 500 550 600 650 700 750 800
M4
Right eye
-0.0001
0
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
350 400 450 500 550 600 650 700 750 800
M7
RGB colors with L/R notches
Left eye Glasses
Right eye Glasses

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Infitec® Color Gamut
CIE 1976 UCS CHROMATICITYDIAGRAM
700 - 780 nm
640
620
600
580
550
520
500
490
480
470
460
440 380 - 420
Red
Green
Blue
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
u'
v'
Infitec Left
ITU-R BT.709-4
Infitec Right

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JVC Stereoscopic Projection
• JVC High Performance Stereoscopic 3-D
Stereographic Projection System using DILA
Projectors with Infitec®filters method.
– QX-1 Projectors (2048x1536)
– DILA LCOS, 94% aperture ratio
– 96 Hz refresh rate per eye
– Dual HD-SDI full bandwidth playback by QuVIS
– Black Level >2500:1
– L/R extinction ratio >1000:1
– Passive Glasses, head movement invariant
– Stewart Filmscreen optical grade screen