Grandpa
![](https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Pantheon_innen.jpg/220px-Pantheon_innen.jpg)
The Opaion of the Pantheon in Rome
An Opaion ( Greek ὀπαῖον for "smoke hole", plural Opaia ), German Opäum , is a round opening at the highest point of a dome . Other names are dome eye or simply eye . Since the Renaissance in particular , the Opaion has usually been roofed over by a lantern , which allows less and more diffuse light to enter the interior , but protects it from the weather .
literature
- Christof Spuler: Opaion and lantern. On the question of the lighting of ancient and early Christian buildings by an Opaion and the creation of the dome lantern , Hamburg 1973
Web links
Commons : Opaion - collection of images, videos and audio files