Radiate crown

For the papal encyclical, see Fulgens corona.
Coin of Bahram I of the Sassanian Empire (late 3rd century AD, Ctesiphon mint)

A radiant or radiate crown, also known as a solar crown, sun crown, Eastern crown, or tyrant's crown, is a crown, wreath, diadem, or other headgear symbolizing the Sun or more generally powers associated with the Sun. Apart from the Ancient Egyptian form of a disc between two horns, it is shaped with a number of narrowing bands going outwards from the wearer's head, to represent the rays of the Sun. These may be represented either as flat, on the same plane as the circlet of the crown, or rising at right angles to it.