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1
An Interactive Autostereoscopic Display
Using a Holographic Optical Element
Jonny Gustafsson, Christoffer Lindfors,Lars Mattsson, Torsten Kjellberg
Dept. of Production Engineering, KTH
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An Interactive Autostereoscopic Display
Using a Holographic Optical Element
• No glasses or other viewing aides.• Uses a holographic optical element (HOE)
as a projection screen for number of digital projectors.
• Access to the image.
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Purpose
• To be used by a small group of people discussing or demonstrating digital 3D models
• Allows normal eye contact between the users
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”Virtual Reality?”
• In some cases it is more useful to bring virtual objects to the real world than to enter a virtual world.
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Characteristics
• A small group of viewers (3 – 4) should see the image simultaneously
• Objects in the image can be moved interactively
• Haptic interaction is being adapted to the display
• Monochrome images (color is possible)• Good contrast• Sharp images.• Very bright – no need to dim the lights in
the room.• Scalable
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Applications
• Product design and development• Military command• Medical imaging• City planning• Surveying• Scientific visualization• Chemistry• Games and entertainment• Education and information
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Contrast Measurement
Detector
Viewing slit
HOE
Bright square
S N
S/N~100
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Crosstalk Measurement
S CC/S ~ 0.7%
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Specs
• Display area 80 cm x 60 cm• Angle of View >100o
• Color: monochrome, red• Contrast: > 90:1 (limited
by projectors)
• Crosstalk betweenperspective views: 0.7 %
• Number of pixels XGA (1024 x 768)
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Main sponsor:VINNOVA
Support from:Volvo CarsSCASilicon GraphicsOpticore