Irradiating device (1) for irradiating of a user with actinic radiation, comprising– a square housing (11) with five walls, wherein the missing sixth wall of the parallelepiped is the longitudinal wall, in the direction of – as seen from the central longitudinal axis (la) of the cuboid –– actinic radiation is emitted from at least one exchangeable, actinic radiation of at least a wavelength of emitting light source (12a) and– the of the at least one light source (12a) is reflected actinic radiation emitted by a reflector (13) with a plurality of in a prism - arrangement relative to one another and reflector surfaces (13a, 13b, 13c, 13d, 13e), at least two of which a passage or a plurality of passages (14) for mounts and connections for the control of the at least one light source (12a) and have their supply of electric current;– wherein, in the cuboid housing (11) interposed devices, control devices and connections for the power supply of the at least one light source (12a) of the irradiating device (1) are accommodated; and– Devices (15) for positioning of the irradiating device (1) relative to a user.
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