Holo-Light, Technology, MR Glossary

A new technology goes hand in hand with new terms and explanations. This special wording might be difficult and new and that‘s exactly why we would like to simplify it by offering our AR/VR Glossary.

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Air tap

Air tap is a core gesture of HoloLens, which is used to interact with virtual content. It‘s a tapping gesture with the hand held upright and similar to a mouse click or select.

Augmented Virtuality (AV)

Augmented Virtuality means to add some physical paramteres while being in a virtual world. The degree of immersion is usually very high. Using controllers and sensors to be able to move and grab virtual objects helps users to feel like a part of the virtual world.





Bloom is a core gesture of HoloLens, which is used to always go back to the Start Menu. It‘s equivalent to pressing the Home Button of a smartphone.


Field of View (FOV)

The Field of View is the extent of the observable world that is seen at any given moment. In case of wearing smart glasses, it‘s the angle in which users are still able to see virtual content. Virtual Reality devices have already a very big FOV while most AR/MR devices still have a limited FOV.

Frame rate

The frame rate (expressed in frames per second or FPS) is the frequency rate at which consecutive images (frames) are displayed. The higher the fram rate, the more natural virtual objects look like. If the fram rate is too low, users have the feeling of shaking holograms. The perfect fram rate is at 60 frames per second.





Gaze is the first form of input and is a primary form of targeting within mixed reality. Gaze tells you where the user is looking in the world and lets you determine their intent. In the real world, you'll typically look at an object that you intend to interact with. This is the same with gaze.




Head-mounted display (HMD)

A head-mounted display is a display device, worn on the head. It has a small display optic in front of one (monocular) or each eye (binocular). Other expressions would be smart glasses or goggles.


It‘s the science and practice of making holograms. A hologram is a photographic recording of a light field, rather than of an image formed by a lens. It‘s used to visualize a fully three-dimensional image of a virtual object.





It‘s the perception of being physically present in a non-physical (virtual) world. The perception is created by surrounding the user of a VR/AR/MR system with images, sound and other stimuli. The degree of immersion increases with the perception of being physically present in a virtual world.




Motion Sickness




A Polygon is a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed circuit. A polygon has at least three sides and can therefore be seen as a triangle. The points, where two edges meet are called the polygon‘s vertices. Every virtual object consits of many polygons. The more polygons are used, the more details of a virtual object can be displayed. But as the performance of head-mounted displays is limited, the number of polygons is also limited.




It‘s the process of locating a moving object as well as the environment around you. It is used to recognize objects, edges, surfaces and markers. It enables Mixed Reality devices to merge the real with the virtual world and is one of the most important parameters.





Unity is a cross-platform game engine developed by Unity Technologies. It is used to develop 3 dimensional and 2 dimensional applications for computers, consoles, mobile devices and smart glasses. The programming language used is C#. Holo-Light develops mainly in Unity.



X Reality (XR)

XR encompasses a wide spectrum of hardware and software, which enables content creation for VR/AR/MR. The „X“ represents a variable that is not fully known or specified and can be seen as a summary for AR, MR, VR and similiar expressions.