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== Specifications ==
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{{Infobox tsg
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| name          = Head Mounted Display
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| image          = Htcvive.png
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| caption        = HTC Vive
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| downloads      =
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| manuals        =
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}}
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A head-mounted display (HMD), is a display device worn on the head or as part of a helmet, glasses or visor, that has a small display optic in front of one or each eye<ref>https://en.wikipedia.org/wiki/Head-mounted_display</ref>. HMDs are most often used for virtual reality, for instance in the [[RIVER Labs|Radboud Immersive Virtual Environment Research labs]].
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==Specifications==
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We currently offer the following types of head-mounted display in our research labs. For a full comparison of past and present HMDs, as well as other headsets on the market, see [[Head Mounted Displays/Comparison|Comparison]].
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{| class="wikitable"   
 
{| class="wikitable"   
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|-
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! scope="col" style="width:200px;"|
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! scope="col" style="width:200px;"| [[File:Htcvive.png|200px|Image: 200 pixels]]
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! scope="col" style="width:200px;"| [[File:Valve-index.png|200px|Image: 200 pixels]]
 
|-
 
|-
 
! scope="col"|  
 
! scope="col"|  
! scope="col"| [[File:NVision nVisor SX60 1 0.jpg|200px|Image: 200 pixels]]
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! scope="col"| HTC Vive
! scope="col"| [[File:OculusRift hero.png|200px|Image: 200 pixels]]
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! scope="col"| Valve Index
! scope="col"| [[File:Camera dk2.jpg|200px|Image: 200 pixels]]
   
|-
 
|-
! scope="col"| Device
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! Display
! scope="col"| Nvis Nvisor SX60
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! scope="row" colspan="2"|
! scope="col"| Oculus Rift Dev. Kit 1
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! scope="col"| Oculus Rift Dev. Kit 2
   
|-
 
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| In Service || style="text-align:center;" | 2006-2013 || style="text-align:center;" | 2013- || style="text-align:center;" | TBA
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| Display Type || AMOLED || LCD
 
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! Display
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| Display Resolution (px, per eye) || 1080 * 1200 || 1440*1600
! scope="row" colspan="3"|
   
|-
 
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| Display Type || LCOS || LED || OLED
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| Display Elements || 2 || 2
 
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| Display Resolution (per eye) || 1280 * 1024 || 640 * 800 || 960 * 1080
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| Pixel Density (ppi) || unspecified || 598
 
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| Pixels Per Inch || ?? || 251 || 441
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| Total Pixels (per eye) || 1,296,000 || 2,304,000
 
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| Total Pixels (per eye) || 1,310,720 || 512,000 || 1,036,800
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| Display Refresh Rate (Hz) || 90 || 80/90/120/144
 
|-
 
|-
 
! Viewing Optics
 
! Viewing Optics
! scope="row" colspan="3"|
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! scope="row" colspan="5"|
 
|-
 
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| Field of View (horizontal) || 44° || 90° || 90°
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| Field of View <ref group="fn" name="fov"/> || 110° || 130°
 
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|-
| IPD (mm) || 53-72 || 62 || 62
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| IPD (mm) || 60.9-73.6 || 58-70
 
|-
 
|-
 
! Physical properties
 
! Physical properties
! scope="row" colspan="3"|
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! scope="row" colspan="5"|
 
|-
 
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| Weight (g) || 1,050 || 379 || 439
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| Weight (g) || 555 || 809
 
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| Cable length (m) || 4.5 || 1.8 || 3.0 (detachable)
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| Cable Length (m) || 4.5 || 5.0
 
|-
 
|-
 
! Interface
 
! Interface
! scope="row" colspan="3"|
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! scope="row" colspan="5"|
 
|-
 
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| Control unit size (mm) || 432 * 217 * 44 || 104 * 90 * 19 || built-in
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| Platform || PC || PC
 
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| Control unit weight (g) || 2,386 || 200 (est.) || n/a
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| SteamVR compatible || style="background-color:#9F9;" | Yes || style="background-color:#9F9;" | Yes
 
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| Inputs || Dual VGA, Dual DVI || HDMI, DVI-D, USB || HDMI 1.4b, USB, IR Sync
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| Inputs || HDMI, USB || DisplayPort, USB
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|-
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| Controller || Vive Wand || Valve Index
 
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|-
 
! Tracking
 
! Tracking
! scope="row" colspan="3"|
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! scope="row" colspan="2"|
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|-
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| Type || Lighthouse || Lighthouse 2.0
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|-
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| Degrees of Freedom || 6 || 6
 
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| Head Tracking || style="background-color:#ffaaaa;" | No || style="background-color:#aaffaa;" | Yes || style="background-color:#aaffaa;" | Yes
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| Max. Play Area (m2) || 16 || 100<ref group="fn">Requires 4 Lighthouses 2.0</ref>
 
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| Position Tracking || style="background-color:#ffaaaa;" | No || style="background-color:#ffaaaa;" | No || style="background-color:#aaffaa;" | Yes
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| Additional Trackers || style="background-color:#9F9;" | Yes || style="background-color:#9F9;" | Yes
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|-
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| Hand Tracking || style="background-color:#F99;" | No || style="background-color:#F99;" | No
 
|-
 
|-
 
! Audio
 
! Audio
! scope="row" colspan="3"|
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! scope="row" colspan="2"|
 
|-
 
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| Built-in Headphones || style="background-color:#aaffaa;" | Yes || style="background-color:#ffaaaa;" | No || style="background-color:#ffaaaa;" | No
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| Built-in Headphones || style="background-color:#FFB;" | Optional<ref group="fn">Available with the Vive Deluxe Audio Strap</ref> || style="background-color:#9F9;" | Yes
 
|}
 
|}
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<references group="fn">
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<ref name="fov">Field of View specified by manufacturer, could be horizontal or diagonal. Actual field of view depends on the distance between the HMD lenses and your eyes. For all listed devices, this distance is variable.</ref>
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</references>
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==Installation==
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==Configuration==
 
==Usage==
 
==Usage==
In RIVER lab 2, five retroreflective markers are attached to the HMD for tracking the participant's position and orientation and any internal tracking is disabled.
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==See Also==
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*[[RIVER Labs]]
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==References==
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<references />
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==External Links==
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