• Goggle style: the nose and the ears support the weight of the device, like reading glasses.
• Front fixation style: the forehead supports the weight of the device.
• Oaktree style: this variant is a full head fixation. Users are strongly advised to have applications that allow full head fixation for the support of the opto-electronic device.

AR-vision-3D: a full stereoscopic video see-through binocular display. Two separate colour cameras offer realistic 3D effect in different working distances through convergence adjustment. Excellent image quality and variety of capabilities make this device the best in AR range for viewing in 3D. Field of view is 40° diagonal and resolution is 800x600.

Commercial applications: visualising in 3D new designs (cars, cottages, buildings, boats etc), augmented video see-through holograms, paleontology, reconstruction of ancient ruins and monuments, design and visualisation of architectural projects.

Trivisio AR-vision 3D HMD

Trivisio AR-vision 3D Goggles

AR-vision-S: a stereoscopic video see-through binocular display. The camera signals are used for video-tracking or can be superimposed by a stereoscopic virtual PC image. Field of view is 40° diagonal and resolution is 800x600.

Commercial applications: visualizing in 2D and 3D immersive or semi-immersive mixed reality tasks, urban planning and landscaping, computer-based work environments, augmented video see-through holograms, paleontology, reconstruction of ancient ruins and monuments, design and visualization of architectural projects.

Trivisio AR-vision-S HMD

Mixed Reality Sample Setup:

Video-see-through, stereoscopic displays, stereoscopic USB camera. Required equipment: PC or Laptop with USB 2.0 and Dual-Graphic card (i.e. Matrox MultiMonitor). The PC must be very powerful to handle 30Mbit/sec video stream of stereo cameras. (optional 2 PCs) AR software (i.e. AVALON)	Video-see-through, stereoscopic displays, split stereoscopic USB camera. Required equipment: Two PC or Laptop with USB 2.0 and VGA output AR software (i.e. AVALON)

Attachment and Mechanical Adjustment of the HMDs:

The HMD adjusts to your face and to your eyes:

The adjustment of distance between the oculars comes in two versions in order to match each individual’s interpupillary distance (IPD):

	AR-vision 3D AR-vision AR-vision-S Stereo 2 independent channels (no sync needed) n/a 2 independent channels (no sync needed) Brightness manually adjustable manually adjustable manually adjustable Contrast manually adjustable manually adjustable manually adjustable IR-light manually switchable manually switchable manually switchable Digital magnifier built-in electronic zoom 8x built-in electronic zoom 8x built-in electronic zoom 8x Mode switch 5 modes 5 modes 5 modes Basic mode with built-in camera with built-in camera with built-in camera Second mode same + digital zoom same + digital zoom same + digital zoom Third mode Composite video, S-video in NTSC or PAL Composite video, S-video in NTSC or PAL Composite video, S-video in NTSC or PAL Fourth mode external video zoomed external video zoomed external video zoomed Fifth mode SVGA (from PC) 800 x 600@ 60/75/80/100Hz SVGA (from PC) 800 x 600@ 60/75/80/100Hz SVGA (from PC) 800 x 600@ 60/75/80/100Hz Video out 2x camera PAL (optional VGA, USB 2.0 progressive scan, 48fps bayerpattern) Camera signal PAL (optional VGA, USB 2.0 progressive scan, 48fps bayerpattern) 1x camera PAL (optional VGA, USB 2.0 progressive scan, 48fps bayerpattern) Weight approx. 480 g (incl. battery) approx. 380 g (incl. battery) approx. 480 g (incl. battery) Dimensions (W/H/D) 105mm/155mm/43mm 105mm/155mm/25mm 105mm/155mm/43mm Battery changeable + rechargeable Ni-MH 6V/2, 1Ah changeable + rechargeable Ni-MH 6V/2, 1Ah changeable + rechargeable Ni-MH 6V/2, 1Ah Charging time approx. 50 min, with enclosed power supply approx. 50 min, with enclosed power supply approx. 50 min, with enclosed power supply Operating time approx. 4h based on standard batteries approx. 2h based on standard batteries approx. 2h based on standard batteries

Camera Comparison:

The integrated colour cameras are available in two different versions:

Analog (PAL or NTSC)

Digital (USB 2.0)

For most mixed reality applications the camera signals must be digitized to superimpose the image by computer generated signals. If using analog cameras this can be done by frame grabbers such as TV-cards or graphic cards with integrated video-in functionality or by special grabbing hardware. If moving the head fast (rotating from left to right) the disadvantages of PAL/NTSC cameras are interlaced artefacts which decrease the quality of image recognition. In some HMD designs the lenses can be changed manually by user.

	Camera Type PAL NTSC USB 2.0 Resolution 768x576, 470 TV lines 640x480 640x480 Chip 1/4" CCD 1/4" CCD 1/3" CMOS Sensitivity 0.8 Lux @ F1.2 0.8 Lux @ F1.2 approx 5 Lux @ F2 Refresh Rate 50fps interlaced 60fps interlaced 48fps progressive, bayer pattern Output Signal/Plug PAL / RCA (Cinch) NTSC / RCA (Cinch) USB 2.0 Output Stereo-Version 2 independent PAL 2 independent NTSC single USB Mini-B (optional 2 independent USB Mini-B) S/N Ratio >52dB >52dB n/a FOV diag 40° 40° 52° Lens f=6mm M12x0.5 f=6mm M12x0.5 f=6.6mm M9x0.5 Gain/Whitebalance automatic automatic manually by software