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An '''optical see-through head-mounted display''' is a type of head mounted display that uses optical see-through panels and projects light off of them or from them. It allows the user to see the real world and the displayed content layered on top.

A '''transparent display headset''' is a type of wearable technology product that is worn on the head and includes a display that is see-through.

'''OST-HMD''' stands for optical see-through head mounted display.<ref>Design of a Pupil-Matched Occlusion-Capable Optical See-Through Wearable Display https://ieeexplore.ieee.org/abstract/document/9416829</ref>

It uses transparent pieces of glass or plastic projects light off of them or through them, or against them. It allows the user to see the real world and the displayed content layered on top. Examples are the [[Magic Leap 1]], the [[Microsoft Hololens]], and the [[Vuzix Blade]].

Most head mounted units made with [[waveguide]]s are OST-HMDs.

'''OST-HMD''' stands for optical see-through head mounted display.<ref>Design of a Pupil-Matched Occlusion-Capable Optical See-Through Wearable Display https://ieeexplore.ieee.org/abstract/document/9416829</ref> Most head mounted units made with [[waveguide]]s are OST-HMDs. It can use a waveguide or a [[reflector]]. It can have a computer built in, or the computer can be separate.

 

It can use a waveguide or a [[reflector]].

==Examples==

==Examples==

* [[HoloLens 1]]

* [[HoloLens 1]]

* [[Google Glass]]

* [[Google Glass]]

==References==

==References==