Änderungen
Aus Hackerspace Ffm
/* Gallery */
[[Datei:HoloDingsYoutube.jpg|500px]]
A DIY hologram project based on AIRR ("Aerial Imaging by Retro‐Reflection") developed by Prof. Yamamoto. Using two optical component, if you count the observers eyes too it's one more :D This optical system refocuses the light-path in mid air, hence you get the impression of a floating image in mid air.
The main optical components are a half mirror (aka magic mirror) and a retroreflector. A retroreflector is like a mirror, but it reflects always the photons back to the light sources. For example, all the street signs utilises retroreflectors as a foil to get higher visibility. A similar foil is used for this project, but with a better optical quality and reflectivity value.
The half mirror is self made. The glas is cut from a photo picture frame, and a sun shield / privacy foil was applied.
== How it works ==
The following animation shows, from the side, the light-path for the upper half of the half mirror. The blue lines are the retroreflectors, the green line is the half mirror.
[[Datei:HoloDingsAni.gif]]
== Gallery ==
<gallery mode="packed-hover">
image:HoloDings1.jpg
image:HoloDings2.jpg
image:HoloDings3.jpg
image:HoloDings4.jpg
image:holodings_led_display_1.jpg
image:holodings_led_display_2.jpg
image:holodings_led_display_3.jpg
image:holodings_halfmirror.jpg
image:holodings_retroreflektor.jpg
image:Hackffm Gui.gif
</gallery>
== External links ==
http://www.k2.t.u-tokyo.ac.jp/perception/AIRR_Tablet/index-e.html
https://onlinelibrary.wiley.com/doi/abs/10.1002/j.2168-0159.2013.tb06364.x
https://de.wikipedia.org/wiki/Retroreflektor
https://www.youtube.com/watch?v=zlN7DTx6urY
