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XR glasses glossary

Plain-English definitions for display-glasses terms.

3DoF
Three degrees of freedom: tracks head rotation (yaw, pitch, roll) but not movement through space.
6DoF
Six degrees of freedom: rotation plus position, usually using cameras.
0DoF
A fixed screen that moves with your head. Best in vehicles.
Birdbath optics
A compact design where a display above the lens reflects off a curved combiner. Common in display glasses.
Prism optics
An alternative combiner design used by some newer glasses that allows a wider FOV.
DP Alt Mode
DisplayPort Alternate Mode: lets a USB-C port carry video. Needed for a direct connection to the glasses.
Diopter dial
A built-in focus adjustment for nearsighted users.
Edge fade
Gradually darkening the outer edge of the image so soft corners are less distracting.
Electrochromic dimming
Lenses that darken electronically to block outside light.
Eyebox
The zone where your eye can be and still see the full image sharply.
FOV
Field of view: how large the image appears, given as a diagonal angle (e.g. 46°, 50°, 58°).
Half SBS
Side-by-side 3D squeezed into one normal-width frame. Full SBS keeps full width per eye.
Gyro drift
Slow wandering of a head-tracked screen caused by accumulated sensor error.
IPD
Interpupillary distance: the distance between your pupils.
Lead eye
In Complete VR Studio's depth effect, the eye whose image is enlarged or tilted.
Micro-OLED
The tiny, high-density OLED panels used in most display glasses.
Per-eye
Settings applied to the left or right eye independently.
Recenter
Resetting a head-tracked screen to straight ahead (Ctrl+Alt+R in Complete VR Studio).
Refresh rate
How many times per second the display updates, e.g. 60, 90 or 120 Hz.
SBS
Side-by-side: a 3D format with left and right images next to each other, 3840×1080 on most glasses.
Stretch / curvature
Scaling and bending the image to fit the optics or to match the two eyes.
Vertical disparity
An up/down offset between the eyes. Even small amounts are uncomfortable.

Related: IPD basics, SBS movies, DP Alt Mode and adapters.

Trial, price and how to get it

Complete VR Studio is a Windows 10 (version 19041 or newer) and Windows 11 x64 app, currently at version 1.0.0-preview.10. Premium features are included in a 7-day trial from install, and basic viewing keeps working until day 90. Activation costs about $5 in Bitcoin during the trial, or about $25 after it, paid in Bitcoin only. It's built security-first. See trial & pricing and compatibility for details.

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FAQ

What does SBS mean?

Side-by-side 3D: left and right images next to each other.

What is IPD?

The distance between your pupils.

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