Pixel density: Difference between revisions
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==Pixel density in Virtual Reality== | ==Pixel density in Virtual Reality== | ||
[[Virtual Reality#Devices|Virtual reality head-mounted displays]] require high pixel density because the screen is very close to the user's eyes. An [[HMD]] with low pixel density can cause blurring of words and objects | [[Virtual Reality#Devices|Virtual reality head-mounted displays]] require high pixel density because the screen is very close to the user's eyes. Higher PPI leads to sharper images with more details. An [[HMD]] with low pixel density can cause blurring of words and objects and the "screen door effect". In [[VR]] PPI is just as important if not more important than resolution as a parameter to judge HMDs. | ||
As pixel density increases, lower [[persistence]] is needed to avoid blurring. | As pixel density increases, lower [[persistence]] is needed to avoid blurring. | ||
Revision as of 22:31, 27 August 2015
This page is a stub, please expand it if you have more information.Pixel density is the number of pixels in a fixed distance. It is often measured in pixels per inch or PPI. A display's pixel density is different from its resolution, which is the total number of pixels across the display's width and height.
Pixel density in Virtual Reality
Virtual reality head-mounted displays require high pixel density because the screen is very close to the user's eyes. Higher PPI leads to sharper images with more details. An HMD with low pixel density can cause blurring of words and objects and the "screen door effect". In VR PPI is just as important if not more important than resolution as a parameter to judge HMDs.
As pixel density increases, lower persistence is needed to avoid blurring.
Pixel density of various HMDs
Virtual Reality
Augmented Reality
| Devices | Pixel Density |
|---|---|
| Atheer AiR | |
| CastAR | ?? |
| Google Glass | |
| Impression Pi | 400+ PPI |
| Magic Leap 2 | Over 16.8M colors supported |
| Magic Leap One | |
| Meta 2 | |
| Microsoft HoloLens | Holographic density: over 2.5k radiants (light points per radian) |
| Microsoft HoloLens 2 | |
| Project North Star | 615 ppi |
| R-7 Smartglasses | |
| Rokid Max Pro | |
| SmartEyeglass Developer Edition SED-E1 | ?? |
| Snap Spectacles | |
| Snap Spectacles 2 | |
| Snap Spectacles 3 | |
| Snap Spectacles 4 | |
| Snap Spectacles 5 | 37 PPD |
| Sulon Q | |
| XREAL Air 2 Pro |