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| [[File:Lumus oe-32.jpeg|thumb|A Lumus optical engine that uses a waveguide]] | | #REDIRECT [[Waveguide display]] |
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| A '''waveguide''' is a piece of transparent material where an image can be shone in one part and exit another part that is separate. It is useful in making display glasses that use optical see through displays.
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| A waveguide often serves as a [[combiner]].
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| Waveguides are often based on [[diffraction grating]]s. A [[diffractive waveguide]] is a piece of glass or plastic with diffraction gratings on it.
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| A pupil-expanding waveguide was used in the [[Magic Leap 1]].
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| __NOTOC__
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| ==Manufacturing==
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| Waveguides can be built in layers.
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| Waveguides can be made using lithography.<ref name="o061">{{cite web | title=A Better Way for Manufacturing Diffractive Optics on AR Waveguides | website=YouTube | date=2024-03-06 | url=https://www.youtube.com/watch?v=7XOj-6YUCCI | access-date=2024-08-30}}</ref>
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| ==Companies==
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| * [[Dispelix]]
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| * [[Digilens]]
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| * [[Lumus]]
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| * [[Vuzix]]
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| * [[Holographix]]
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| ==Materials==
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| * [[Glass]]
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| ==Classifications==
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| * [[Diffractive waveguide]]<ref name="q083">{{cite web | last=Guttag | first=Karl | title=Magic Leap Review Part 1 – The Terrible View Through Diffraction Gratings | website=KGOnTech | date=2018-09-27 | url=https://kguttag.com/2018/09/26/magic-leap-review-part-1-the-terrible-view-through-diffraction-gratings/ | access-date=2024-08-30}}</ref>
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| A diffractive waveguide has an [[incoupling]] and an [[outcoupling]].<ref name="o061"/> It uses [[total internal reflection]] to get the light from the incoupling to the outcoupling.<ref name="o061"/> The incoupling takes in a display source like an [[LCOS]] display. The outcoupling is seen by a person's [[eye]].<ref name="o061"/>
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| * [[Reflective waveguide]], advertised by [[Lumus]]
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| * [[Pupil expansion waveguide]] - A waveguide that enlarges the image.<ref name="g872">{{cite web | last=Blanche | first=Pierre-Alexandre | title=Holographic Combiners Improve Head-Up Displays | website=Photonics Spectra | date=2019-03-18 | url=https://www.photonics.com/Articles/Holographic_Combiners_Improve_Head-Up_Displays/a64487 | access-date=2024-09-03}}</ref>
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| * [[Pupil replication waveguide]]
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| ==References==
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| <references />
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| [[Category:Optical components]]
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