1 An Interactive Autostereoscopic Display Using a Holographic Optical Element Jonny Gustafsson, Christoffer Lindfors, Lars Mattsson, Torsten Kjellberg Dept. of Production Engineering, KTH

2 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.

3 Purpose To be used by a small group of people discussing or demonstrating digital 3D models Allows normal eye contact between the users

4 ”Virtual Reality?” In some cases it is more useful to bring virtual objects to the real world than to enter a virtual world.

5 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

6 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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15 Contrast Measurement Detector Viewing slit HOE Bright square SN S/N~100

16 Crosstalk Measurement S C C/S ~ 0.7%

17 Specs Display area 80 cm x 60 cm Angle of View >100 o Color:monochrome, red Contrast:> 90:1 (limited by projectors) Crosstalk between perspective views:0.7 % Number of pixelsXGA (1024 x 768)

18 Main sponsor : VINNOVA Support from : Volvo Cars SCA Silicon Graphics Opticore